"gargles" in the noun sense
1. gargle, mouthwash
a medicated solution used for gargling and rinsing the mouth
the sound produced while gargling
"gargles" in the verb sense
utter with gargling or burbling sounds
2. gargle, rinse
rinse one's mouth and throat with mouthwash
"gargle with this liquid"
Source: WordNet® (An amazing lexical database of English)
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