Dictionary.com
Thesaurus.com
Synonyms

dental floss

American  

noun

  1. a soft, strong, waxed or unwaxed thread, usually made of nylon, for drawing between the teeth to remove food particles and prevent the buildup of plaque.


dental floss British  

noun

  1. a soft usually flattened often waxed thread for cleaning the teeth and the spaces between them

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of dental floss

An Americanism dating back to 1905–10