| 单词 | clam-shell |
| 释义 | > as lemmasclam-shell clam-shell n. the shell of a clam; formerly (Scottish) the scallop-shell worn in their hats by pilgrims who had crossed the seas; also in further extended uses and slang the head; the mouth (see sense 3); plural the jaws or lips; (also) a bucket or grab on a dredger, excavator, etc., shaped like a clam-shell; frequently attributive. ΘΚΠ society > occupation and work > equipment > earth-moving and excavating equipment > [noun] > dredging equipment dredge1471 clam-shell1508 drag1611 steam dredge1801 dredging-machine1830 hedgehog1838 bag and spoon1840 hydrophore1842 dredger1863 gold dredge1881 gold dredger1897 suction dredge1901 bucket dredge1907 cutter-dredge1913 society > occupation and work > equipment > earth-moving and excavating equipment > [noun] > excavator > part of clam-shell1508 spade-wheel1874 1508 W. Kennedy Flyting (Chepman & Myllar) in Poems W. Dunbar (1998) I. 217 Thy cloutit cloke, thy skryp and thy clamschellis. 1540 Sc. Ld. Treas. Acc. in R. Pitcairn Criminal Trials Scotl. I. *305 For vj ¼ vnces siluer to be ane Clam-schell to kepe the kingis grace Halk-mete. 1765 H. Timberlake Mem. 50 Wampum, which are beads cut out of clam shells. 1834 S. Smith Sel. Lett. Major Jack Downing 104 Shut up your clack, or I'll knock your clam-shells together pretty quick. 1859 J. R. Bartlett Dict. Americanisms (ed. 2) s.v. The padlock now used on the United States mail-bags is called the ‘Clamshell padlock’. 1861 O. W. Norton Army Lett. 18 A good many of them [sc. boys] are making Clam-shell rings. 1862 R. W. Emerson Thoreau in Wks. (1906) III. 334 Large heaps of clam-shells and ashes. a1877 E. H. Knight Pract. Dict. Mech. I. 746/1 The ‘clam-shell’ dredge..consists of a pair of scoops which are hinged to an axis and close upon the load. 1877 Encycl. Brit. VII. 465/1 Dredging in Canada and the United States is done by what are called Dipper and Clam-shell dredges. 1877 Encycl. Brit. VII. 465/1 The clam-shell is a box made of two similar pieces of wrought iron hinged together at one end. 1930 Engineering 15 Aug. 195/3 Many types of dredgers had been tried such as..clam-shell, suction and other forms. 1963 Engineering 30 Aug. 269/2 The eight hydraulic rams operating the clamshells. clam-shell 3. U.S. slang. The mouth. Also clam-shell. ΚΠ 1825 J. Neal Brother Jonathan I. 143 Shet your clam, our David. 1848–60 J. R. Bartlett Dict. Americanisms (at cited word) There is a common though vulgar expression in New England, of ‘Shut your clam-shell’. < as lemmas |
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