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单词 overfall
释义

overfalln.

Brit. /ˈəʊvəfɔːl/, U.S. /ˈoʊvərˌfɔl/, /ˈoʊvərˌfɑl/
Forms: see over- prefix and fall n.2
Origin: Formed within English, by derivation. Etymons: over- prefix, fall n.2
Etymology: < over- prefix + fall n.2, perhaps after to fall over at fall v. Phrasal verbs 1 or overfall v.
1. Frequently in plural. A turbulent stretch of sea or water with short breaking waves, caused by a strong current or tide flowing over a submarine ridge or shoal, or by the meeting of contrary currents. Also in extended use.
ΘΚΠ
the world > the earth > water > flow or flowing > wave > movement of waves > [noun] > overfall
overfall1542
rip1775
rip tide1862
1542 N. Udall tr. Erasmus Apophthegmes f. 119 b A daungerous goulfe, makyng sore ouerfalles by reason of the meetyng of soondry streames in one pointe.
1589 Voy. W. Towrson in R. Hakluyt Princ. Navigations i. 113 Certaine Currants, which did set to the West Southwestward so fast as if it had bene the ouerfall of a sand, making a great noyse like vnto a streame or tyde gate when the water is shoale.
1633 T. James Strange Voy. 40 We..came amongst many strange races, and ouer-falles.
1726 G. Shelvocke Voy. round World xii. 386 The frightful riplings and over-falls of the water.
1748 B. Robins & R. Walter Voy. round World by Anson iii. ii. 315 This tide runs at first with a vast head and overfall of water.
1774 M. Mackenzie Treat. Maritim Surv. Pl. iv Overfalls; or rough, breaking Seas.
1867 J. MacGregor Voy. Alone in Rob Roy v. 75 All over the British Channel there are patches of sand, shingle, or rock, which..cause the tide-stream even without any wind to rush over them with great eddies and confused babbling waves... These places are called..in some charts, ‘overfalls’.
1878 H. A. Giles Gloss. Subj. Far East 27 Chow-chow water,..an overfall of water produced by strong currents dangerous to small boats.
1947 A. C. Douglas Gliding & Adv. Soaring i. 32 The cloud currents, the heat turbulence, high winds and mountain overfalls, which the aeroplane pilot finds so unpleasant or even dangerous, are regarded by the sail~plane pilot as friends, not as enemies.
1975 J. R. L. Anderson Death in North Sea viii. 139 There were two main tidal streams... They might run up to about two knots, with a somewhat faster rate by some overfalls off Spurn Head.
1991 Motor Boat & Yachting June 60/2 You'll need to be pretty sure of your position to avoid the overfalls.
2. A waterfall; a rapid.
ΘΚΠ
the world > the earth > water > waterfall > [noun]
linnc975
waterfallOE
fallc1350
spout1534
waterspout1560
overfall1596
force1600
sault1600
watershoot1669
cascade1671
leap1796
chute1805
water wall1847
1596 W. Raleigh Discoverie Guiana (new ed.) 67 Marched ouer land to view the strange ouerfals of the riuer of Caroli, which rored so farre of... There appeared some ten or twelve ouerfals in sight, every one as high ouer the other as a Church tower.
1600 J. Pory tr. J. Leo Africanus Geogr. Hist. Afr. Introd. 44 It is reported that Nilus doth the like at his Cataracts or ouerfals.
1613 R. Harcourt Relation Voy. Guiana 40 I trauelled up the riuer of Wiapoco, to view the over~falles.
1811 D. Buchan in K. Winter Shananditti (1975) ii. 24 This day's distance is estimated at eleven miles allowing seven from the island..up to the overfall.
1921 H. Guthrie-Smith Tutira i. 5 A meandering serpentine creek..which..breaks into a series of overfalls.
1977 V. Butleer Sposin' I dies in D'Dory 64 We anchored the boat in Sandy Harbour and went to the overfall at the mouth of the river in the skiff.
1991 Canoeist (BNC) Oct. 22 Break out from the lagoon into an overfall from the rack on the left.
3. A sudden drop in the sea bottom, as at the edge of a submarine terrace or ledge. Obsolete.
ΘΚΠ
the world > the earth > water > sea or ocean > region of sea or ocean > [noun] > undersea ledge
ledge1555
overfall1617
1617 T. Bonner Jrnl. (1971) 208 Beinge a litle to[o] far of[f] I came to a great over fall and had but 14 fathom and as soone as I was past it I had no ground.
1798 S. Wilcocke in Naval Chron. (1799) 2 61 It is broken ground, and overfalls of about half a fathom, every cast of the lead.
1804 A. Duncan Mariner's Chron. I. 300 I heard that he had very great overfalls, from twenty seven to thirteen fathoms at one cast, when he was standing in the bay towards the village of Felix.
1817 Chron. in Ann. Reg. 562/2 The channel..is perfectly clear of shoals, but the overfalls are sudden from 15 to 21 and 12 to 7 fathoms.
1860 R. F. Burton in Jrnl. Royal Geogr. Soc. 1859 29 236 The shingly shore shelves rapidly, without steps or overfalls, into blue water.
4. A structure in a canal, dam, etc., to allow the water to overflow when it reaches a certain level, or to keep the water up to the required level.
ΘΚΠ
the world > the earth > water > body of water > channel of water > [noun] > navigable waterway > canal > other structures in canals
overfall1764
aqueduct1791
tail-cut1791
waste-weir1793
boatlift1839
berm-bank1854
tail-bay1856
the world > the earth > water > lake > pool > [noun] > artificially confined water > contrivance for impounding water > weir > types of
mill weirlOE
foot weirc1474
kiddle1477
rowte weir1584
catchwater drain1744
carry1753
dam-head1762
overfall1764
gauge-weir1791
shutter weir1880
1764 J. Smeaton Reports I. 133 A fixed over-fall or weir.
1791 W. Jessop Rep. River Witham 15 Culverts and Overfalls, £90.
1805 Z. Allnutt Considerations Navigation Thames 22 The new constructed open Weir at Windsor,..it will be perceived how trifling..stop or pen, it can possibly make when the moveable Gates, Overfalls, and Rimers are taken away.
1846 Sir R. Kane tr. M. Rühlmann Horizontal Water-wheels 23 In the watercourse,..is to be built up a partition of boards, or, as it is termed, an overfall.
1881 H. W. Taunt Map of Thames 13/2 The village [sc. Streatley], with the weirs and overfalls in the foreground.
1929 Science 24 May 550/2 The utilization in the United States of the hydraulic jump in a scientific way as a destroyer of the energy of water at the foot of an overfall dates only to the work of the Miami Conservancy Board.

Compounds

C1. General attributive (in sense 4). Designating a structure used as an overfall or a dam, etc., containing an overfall.
ΚΠ
1861 S. Smiles Lives Engineers II. 467 A little above it was an ancient overfall weir.
1897 Overland Monthly May 518 The great masonry dam or overfall weir at La Grange on Tuolomne river, which raises the water surface of that stream one hundred feet.
1976 Proc. Royal Soc. A. 351 8 A concrete dam is likely to be cheaper for a valley with steep side slopes (above the crest of the dam) to allow an over-fall spillway (Kariba).
1994 Xinhua News Agency (Nexis) 22 Jan. The extension project includes construction of..an overfall dam.
C2.
overfall mill n. Obsolete a mill worked by an overshot wheel.
ΘΚΠ
society > occupation and work > equipment > mills > [noun] > other mills
martinet?c1475
watermill1580
overfall mill1615
breast mill1659
undershot1705
merchant mill1759
pounding mill1785
floating mill1796
steam-mill1801
pecker1802
chip mill1819
1615 G. Sandys Relation of Journey 127 So plentifull a streame, as able to turn an ouerfall mill.
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).

overfallv.

Brit. /ˌəʊvəˈfɔːl/, U.S. /ˌoʊvərˈfɔl/, /ˌoʊvərˈfɑl/
Forms: see over- prefix and fall v.
Origin: A word inherited from Germanic. Probably also partly formed within English, by derivation. Etymons: over- prefix, fall v.
Etymology: Originally cognate with or formed similarly to Middle Dutch overvallen to attack, to overtake (Dutch overvallen ), Middle Low German overvallen , Middle High German übervallen to attack (German überfallen ) < the Germanic base of over- prefix + the Germanic base of fall v. In later use probably independently re-formed < over- prefix + fall v. Compare to fall over at fall v. Phrasal verbs 1.
Now rare (poetic and archaic).
1.
a. transitive. To attack, assail, fall upon.
ΘΚΠ
society > armed hostility > attack > attack [verb (transitive)]
greetc893
overfallOE
riseOE
assail?c1225
to lay on or upon?c1225
onseekc1275
to set on ——c1290
infighta1300
saila1300
to go upon ——c1300
to turn one's handc1325
lashc1330
annoyc1380
impugnc1384
offendc1385
to fall on ——a1387
sault1387
affrayc1390
to set upon ——1390
to fall upon ——a1398
to lay at?a1400
semblea1400
assayc1400
havec1400
aset1413
oppressa1425
attachc1425
to set at ——c1430
fraya1440
fray1465
oppugn?a1475
sayc1475
envaye1477
pursue1488
envahisshe1489
assaulta1500
to lay to, untoa1500
requirea1500
enterprise?1510
invade1513
assemblec1515
expugn1530
to fare on1535
to fall into ——1550
mount1568
attack?1576
affront1579
invest1598
canvass1599
to take arms1604
attempt1605
to make force at, to, upon1607
salute1609
offence1614
strikea1616
to give a lift at1622
to get at ——1650
insult1697
to walk into ——1794
to go in at1812
to go for ——1838
to light on ——1842
strafe1915
OE Blickling Homilies 203 Hie..oferfeollan þa ðe þa..yrmþo genæson.
a1382 Bible (Wycliffite, E.V.) (Bodl. 959) (1961) Lev. xx. 27 Wiþ stonys men shal ouerfalle [a1425 L.V. oppresse; L. obruent] hem.
1837 T. Carlyle French Revol. I. iii. viii. 144 Silence; which some liken to that of the Roman Senate overfallen by Brennus.
a1916 J. Payne Way of Winepress (1920) 36 Silenus,..drunken with the vinejuice, slept and sleeping so Of Midas overfall'n, awoke and found Himself both hand and foot with flowerbands bound.
b. transitive. To fall on top of or over; to cover.
ΘΚΠ
the world > movement > motion in a certain direction > downward motion > falling > fall down (something) [verb (transitive)] > fall over or upon
overfallOE
overtumblea1640
OE Vercelli Homilies (1992) xv. 258 We halsiað eow, muntas & dena, þæt ge us oferfeallen & bewrigen.
c1175 Ormulum (Burchfield transcript) l. 4799 & tær fell dun þatt hus þurrh wind & oferrfell hemm alle.
c1300 St. Martin (Harl.) 119 in C. D'Evelyn & A. J. Mill S. Eng. Legendary (1956) 487 (MED) Þis treo aros vp anon, for hit nolde his heste worne, & ouerful [c1300 Laud ouerfalle] in þat oþer side meni of his foon.
c1300 St. Martin (Laud) 113 in C. Horstmann Early S.-Eng. Legendary (1887) 452 Huy gunne sawie þat treo a-to to-ward þis holie Manne, þat it scholde ouer-falle him.
a1400 (a1325) Cursor Mundi (Trin. Cambr.) 16661 (MED) Þe hilles shul þei bidde ouer falle vs.
c1440 (?a1400) Morte Arthure 3677 (MED) Knyghtes..With þe swynge of þe swerde sweys þe mastys, Ovyrefallys in þe firste frekis and othire.
a1500 (?a1390) J. Mirk Festial (Gough) (1905) 176 (MED) Barnabe was so wroth þat he cursed þe temple, and sodenly a parte þerof fel doun, and ouerfel mony of hem.
1895 A. Nutt Voy. Bran 190 A thick mist overfell them.
2. intransitive. To fall over or down.
ΘΚΠ
the world > movement > motion in a certain direction > downward motion > falling > fall [verb (intransitive)] > topple over
welt13..
tiltc1390
overfalla1400
waltc1400
tirvec1425
top over tervea1450
overtumble1487
overwelta1522
to fall over1541
top1545
topple1600
tramble1609
tope1796
tottle1830
overtopple1855
whemmel1895
pitch-pole1896
a1400 Psalter (Vesp.) lvii. 8 in C. Horstmann Yorkshire Writers (1896) II. 189 Ouerfel [L. supercecidet] þe fire sa brighte.
1530 W. Tyndale Pract. Prelates sig. Biij It can not be chosen but that many shall ouer faule.
1844 E. B. Barrett Duchess May in Poems II. 92 Horse and riders overfell!
This entry has been updated (OED Third Edition, December 2004; most recently modified version published online March 2022).
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n.1542v.OE
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