backwash

== English == === Etymology === From back +‎ wash. === Pronunciation === (UK) IPA(key): /ˈbæk.wɒʃ/ (US) IPA(key): /ˈbæk.wɑʃ/ Rhymes: -ækwɒʃ === Noun === backwash (countable and uncountable, plural backwashes) (nautical) A backward flow of water, as from oars, a propeller, breaking waves, etc. The similar flow of air from an aircraft engine. The result or consequence of an event; an aftermath. The saliva, spit or food particles that have flowed back into a drink after someone has drunk from it. (economics) The situation where economic growth in one area harms other areas by attracting people and business away from those areas. (education) washback ==== Translations ==== === Verb === backwash (third-person singular simple present backwashes, present participle backwashing, simple past and past participle backwashed) To operate a water filter in the reverse direction in order to clean it. (transitive) To affect with backwash. To clean the oil from wool after combing. === Derived terms === backwash ileitis === Anagrams === washback