(nautical) The backward flow of water from oars or propeller or breaking waves. / The similar flow of air from an aircraft engine. / The result or consequence of an event; an aftermath.

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.

simple past tense and past participle of backwash

plural of backwasher

plural of backwashing

plural of backwash

(textiles) A machine used for washing wool after carding to remove the impurities.

A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air.

(medicine) ileitis that occurs in the setting of pancolitis and tends to correlate with the activity of colitis