dental floss

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

noun

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

Word History and Origins

Origin of dental floss¹

An Americanism dating back to 1905–10