- Frena, the plural of frenulum, are defined as folds of skin that support or limit the movement of a part of the body.
An example of frena are the tissues underneath the tongue that connects it to the mouth and the tissues inside the upper and lower lips.
frena definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
frena definition by American Heritage Dictionary
A plural of frenum.
Variant of frenum