mouthwash
n. C / U B1 Intermediate US //ˈmaʊθˌwɑʃ// UK //mˈaʊθwɒʃ// mouth·wash
n. a liquid you rinse in your mouth to keep it clean and fresh. It helps kill bacteria and can make your breath smell better.
n. a liquid used for rinsing the oral cavity to reduce bacteria, freshen breath, or treat specific dental conditions. Often contains antiseptic or fluoride agents.
He uses mouthwash every night after brushing his teeth.
The dentist recommended a specific brand of mouthwash to help manage the patient's gum inflammation.
While regular brushing removes plaque, mouthwash serves as an essential adjunct to the daily hygiene routine by reaching areas that a toothbrush cannot effectively clean.
From mouth + wash.