Definition of floss noun from the Oxford Advanced Learner's Dictionary

     

    floss

     noun
    noun
    BrE BrE//flɒs//
     
    ; NAmE NAmE//flɔːs//
     
    , NAmE//flɑːs//
     
    [uncountable]
     
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  1. 1= dental floss
  2. 2thin silk thread see also candyfloss
  3. Word Origin mid 18th cent.: from French (soie) floche ‘floss (silk)’, from Old French flosche ‘down, nap of velvet’, of unknown origin.
See the Oxford Advanced American Dictionary entry: floss