backwashn.

Brit.

/ˈbakwɒʃ/, U.S.

/ˈbækˌwɔʃ/,

/ˈbækˌwɑʃ/

Etymology: < back adv.

The motion of a receding wave; a backward current. Also transferred and figurative.

ΘΚΠ

the world > existence and causation > causation > effect, result, or consequence > [noun] > undesired or unintended consequence(s) or side-effect

repercussion1603

aftermath1671

ill effect1675

mal-effect1686

side effect1814

wrack1844

implication1873

backwash1876

katzenjammer1897

backlash1921

kickback1935

spillover1940

fallout1954

rub-off1962

booby prize1972

own goal1975

the world > the earth > water > flow or flowing > wave > movement of waves > [noun] > backwash

outdraught1857

backwash1876

1876 M. E. Braddon Joshua Haggard's Daughter I. 23 Or else the backwash would draw him into its vortex.

1884 Christian World 9 Oct. 757/1 The tremendous backwash of popular enthusiasm.

1927 R. H. Wilenski Mod. Movement in Art 116 The backwash of the French Impressionist technique of the 'seventies.

1955 Sci. News Let. 26 Mar. 200/1 These air whirlpools are not caused by either the propeller backwash or jet stream.

Draft additions June 2014

The passing of water or other liquid through a filter in the reverse direction to normal flow in order to flush it clean; an instance of this. Also: liquid used in such a process. Frequently attributive.

ΚΠ

1897 U.S. Patent 582,405 3 Only a few quarts need to be discharged before the filter is relieved and ready for the backwash.

1928 Jrnl. Amer. Water Wks. Assoc. 19 662 Plants smaller than one million gallons daily have been designed to use the high pressure from the main lines to reservoir for back wash to filters.

1978 F. A. Osamor Oil/Water Separation v. 36 After the first backwash, the materials become intermixed but the filtration efficiency increases in the direction of liquid flow.

1992 Harrowsmith Aug. 88/2 Swimming-pool backwash can also be useful greywater.

2001 S. Roaf et al. Ecohouse (2002) x. 234 The second filter has an automatic backwash unit using a stainless steel cartridge.

Draft additions June 2014

colloquial (chiefly U.S.). The liquid that flows back into a bottle, glass, etc., after a person has taken a drink, esp. when considered objectionable as containing that person's saliva.

ΚΠ

1985 R. P. Krummel Looking Good xix. 141 He..drank my diet soda right out of the large bottle and then complained that it tasted ‘lousy and sickening’. I told him I didn't want his ‘backwash and slime’ all over my soda.

1988 Washington Post 11 Sept. x. 15 The wet April air covers suburban pavement like the slimy backwash coating the glass of the shared Coke bottle your best friend meretriciously let you drink from in sixth grade.

2006 N.Y. Mag. 21 Aug. 55/1 Green juice that tastes like gummy-bear blood and backwash is not my idea of refreshment.

This entry has not yet been fully updated (first published 1885; most recently modified version published online December 2021).

backwashv.

Etymology: compare backwash n.Previous versions of the OED give the stress as: ˈbackwash.

1. To affect with backwash (a boat e.g., with that from the oars of a boat in front).

ΘΚΠ

society > travel > travel by water > propelling boat by oars, paddle, or pole > propel boat by oars, paddle, or pole [verb (transitive)] > row (a boat) > affect with backwash

backwash1882

1882 Standard 16 Sept. 3/6 Backwashing both bow and stroke side of the Thames boat.

2. To clean the oil from wool after combing.

ΘΚΠ

the world > textiles and clothing > textiles > textile manufacture > treating or processing textile materials > treating or processing wool > treat or process wool [verb (transitive)] > clean

clack1429

scour1467

backwash1775

1775 J. Ash New Dict. Eng. Lang. Backwashed, Cleaned from the oil after combing.

Derivatives

backwasher n. (in sense 2).

ΘΚΠ

the world > textiles and clothing > textiles > textile manufacture > treating or processing textile materials > treating or processing wool > [noun] > cleaning wool > one who cleans oil from wool

backwasher1882

1882 Standard 29 Dec. 2/2 A backwasher of Van mohair..The back-washing machine at which the back-washer mentioned above had worked.

backwashing n. (in sense 2).

ΚΠ

1882 Standard 29 Dec. 2/2 The back-washing machine at which the back-washer mentioned above had worked.

This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2019).

单词	backwash
释义	backwashn. Brit. /ˈbakwɒʃ/, U.S. /ˈbækˌwɔʃ/, /ˈbækˌwɑʃ/ Etymology: < back adv. The motion of a receding wave; a backward current. Also transferred and figurative. ΘΚΠ the world > existence and causation > causation > effect, result, or consequence > [noun] > undesired or unintended consequence(s) or side-effect repercussion1603 aftermath1671 ill effect1675 mal-effect1686 side effect1814 wrack1844 implication1873 backwash1876 katzenjammer1897 backlash1921 kickback1935 spillover1940 fallout1954 rub-off1962 booby prize1972 own goal1975 the world > the earth > water > flow or flowing > wave > movement of waves > [noun] > backwash outdraught1857 backwash1876 1876 M. E. Braddon Joshua Haggard's Daughter I. 23 Or else the backwash would draw him into its vortex. 1884 Christian World 9 Oct. 757/1 The tremendous backwash of popular enthusiasm. 1927 R. H. Wilenski Mod. Movement in Art 116 The backwash of the French Impressionist technique of the 'seventies. 1955 Sci. News Let. 26 Mar. 200/1 These air whirlpools are not caused by either the propeller backwash or jet stream. Draft additions June 2014 The passing of water or other liquid through a filter in the reverse direction to normal flow in order to flush it clean; an instance of this. Also: liquid used in such a process. Frequently attributive. ΚΠ 1897 U.S. Patent 582,405 3 Only a few quarts need to be discharged before the filter is relieved and ready for the backwash. 1928 Jrnl. Amer. Water Wks. Assoc. 19 662 Plants smaller than one million gallons daily have been designed to use the high pressure from the main lines to reservoir for back wash to filters. 1978 F. A. Osamor Oil/Water Separation v. 36 After the first backwash, the materials become intermixed but the filtration efficiency increases in the direction of liquid flow. 1992 Harrowsmith Aug. 88/2 Swimming-pool backwash can also be useful greywater. 2001 S. Roaf et al. Ecohouse (2002) x. 234 The second filter has an automatic backwash unit using a stainless steel cartridge. Draft additions June 2014 colloquial (chiefly U.S.). The liquid that flows back into a bottle, glass, etc., after a person has taken a drink, esp. when considered objectionable as containing that person's saliva. ΚΠ 1985 R. P. Krummel Looking Good xix. 141 He..drank my diet soda right out of the large bottle and then complained that it tasted ‘lousy and sickening’. I told him I didn't want his ‘backwash and slime’ all over my soda. 1988 Washington Post 11 Sept. x. 15 The wet April air covers suburban pavement like the slimy backwash coating the glass of the shared Coke bottle your best friend meretriciously let you drink from in sixth grade. 2006 N.Y. Mag. 21 Aug. 55/1 Green juice that tastes like gummy-bear blood and backwash is not my idea of refreshment. This entry has not yet been fully updated (first published 1885; most recently modified version published online December 2021). backwashv. Etymology: compare backwash n.Previous versions of the OED give the stress as: ˈbackwash. 1. To affect with backwash (a boat e.g., with that from the oars of a boat in front). ΘΚΠ society > travel > travel by water > propelling boat by oars, paddle, or pole > propel boat by oars, paddle, or pole [verb (transitive)] > row (a boat) > affect with backwash backwash1882 1882 Standard 16 Sept. 3/6 Backwashing both bow and stroke side of the Thames boat. 2. To clean the oil from wool after combing. ΘΚΠ the world > textiles and clothing > textiles > textile manufacture > treating or processing textile materials > treating or processing wool > treat or process wool [verb (transitive)] > clean clack1429 scour1467 backwash1775 1775 J. Ash New Dict. Eng. Lang. Backwashed, Cleaned from the oil after combing. Derivatives backwasher n. (in sense 2). ΘΚΠ the world > textiles and clothing > textiles > textile manufacture > treating or processing textile materials > treating or processing wool > [noun] > cleaning wool > one who cleans oil from wool backwasher1882 1882 Standard 29 Dec. 2/2 A backwasher of Van mohair..The back-washing machine at which the back-washer mentioned above had worked. backwashing n. (in sense 2). ΚΠ 1882 Standard 29 Dec. 2/2 The back-washing machine at which the back-washer mentioned above had worked. This entry has not yet been fully updated (first published 1885; most recently modified version published online June 2019). < n.1876v.1775
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