Etymology 1 
Alternative forms 
- (transitive, intransitive) To plunge suddenly into water; to duck; to immerse.
- (intransitive) To fall suddenly into water.
- (Can we find and add a quotation of Hudibras to this entry?)
- (transitive) To put out; to extinguish.
Etymology 2 
From Middle English duschen, dusshen (“to rush, fall”), related to Norwegian dusa (“to break, cast down from”), Old Dutch doesen (“to beat, strike”), German dialectal tusen, dusen (“to strike, run against, collide”), Eastern Frisian dössen (“to strike”). Compare doss, dust.
- (transitive) To strike.
- (transitive, nautical) To strike or lower in haste; to slacken suddenly; as, douse the topsail.
douse (plural douses)