godan verb (-gu), intransitive verb
gargle; rinse the mouth
Intransitive verb for rinsing one's mouth, typically with water or mouthwash. Often used after brushing teeth or when feeling a sore throat.
歯を磨いた後、口を漱いだ。
After brushing my teeth, I rinsed my mouth.
風邪の予防に、帰宅したら必ず口
To prevent colds, I make sure to gargle when I get home.