also: ゆすぐ
godan verb (-gu), transitive verb
rinse one's mouth; gargle
Primarily used for rinsing the mouth or gargling; often with water or mouthwash.
See also: 濯ぐ (すすぐ)
食後は必ず口をすすぐ。
I always rinse my mouth after meals.
うがい薬でゆすぐと、のどがすっきりする。
Gargling with mouthwash makes your throat feel refreshed.