Definition of "frenum" []

• 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 that connects the underside of the tongue to the floor of the mouth. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "It is added that Constantine declared all the canons of Rome consuls and patricians — “patricios et consules effici” — that he himself held the bridle of the mare on which the new bishop was mounted — “tenentes frenum equi illius.”"
• "My 8 year old son received a knock to the face and his frenum tore."
• "Most of the time a frenum is not the problem in these cases."