frenum Hear it!

frenum definition

fre·num (frē′nəm)

noun pl. frenums -·nums or frena -·na (-nə)

a fold of skin or mucous membrane that checks or controls the movement of an organ or part, as the fold under the tongue

Etymology: L, lit., a bridle < IE base *dher-, to hold > firm

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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