Definitions
1.NounA backward flow of water, as from oars, a propeller, breaking waves, etc.
2.NounThe similar flow of air from an aircraft engine.
3.NounThe result or consequence of an event; an aftermath.
4.NounThe saliva, spit or food particles that have flowed back into a drink after someone has drunk from it.
5.NounThe situation where economic growth in one area harms other areas by attracting people and business away from those areas.
6.NounAn obscure place; a backwater.
7.NounSynonym of washback.
8.VerbTo operate a water filter in the reverse direction in order to clean it.
9.VerbTo affect with backwash.
10.VerbTo clean the oil from wool after combing.