floss

noun

/flɒs/

/flɑːs/

[uncountable]

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(also dental floss)
a type of very thin string that is used for cleaning between the teeth牙线：一种非常细的线，用于清洁牙齿之间
thin silk thread丝线 see also candyfloss

Word Originmid 18th cent.: from French (soie) floche ‘floss (silk)’, from Old French flosche ‘down, nap of velvet’, of unknown origin.

verb

/flɒs/

/flɑːs/

[intransitive, transitive]

Verb Forms

present simple I / you / we / they floss	/flɒs/ /flɑːs/
he / she / it flosses	/ˈflɒsɪz/ /ˈflɑːsɪz/
past simple flossed	/flɒst/ /flɑːst/
past participle flossed	/flɒst/ /flɑːst/
-ing form flossing	/ˈflɒsɪŋ/ /ˈflɑːsɪŋ/

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floss (something) to clean between your teeth with dental floss用牙线剔（牙）
Word Originmid 18th cent.: from French (soie) floche ‘floss (silk)’, from Old French flosche ‘down, nap of velvet’, of unknown origin.