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dental dam

American  
[den-tl dam] / ˈdɛn tl ˈdæm /

noun

  1. Also called rubber dam.  a thin piece of latex placed over the tooth or teeth being treated during endodontic treatment or other dental work.

  2. a thin piece of latex used to prevent the transfer of bodily fluids during cunnilingus or anilingus.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.