マウスウォッシュFreq.FrequencyTop 100,000Meanings1nounmouthwashA liquid oral hygiene product used for rinsing the mouth. Common in everyday contexts.毎まい晩ばん、歯はを磨みがいた後あとにマウスウォッシュを使つかっています。I use mouthwash every night after brushing my teeth.