- a fold of membrane that checks or restrains the motion of a part, as the fold on the underside of the tongue.
Origin of frenum
< New Latin; Latin frēnum bridle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a variant spelling (esp US) of fraenum
- A membranous fold of skin or mucous membrane that supports or restricts the movement of a part or organ, such as the small band of tissue connecting the tongue to the floor of the mouth.
- An anatomical structure resembling such a fold.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.