Definition: The part of the jaw that curves in which the teeth are rooted.
Updated: April 24, 2008
About.com Health's Disease and Condition content is reviewed by our Medical Review Board
Learn how you can reduce your your numbers with these nutrition and exercise tips. More >
Keep yourself, and your family, happy and healthy this fall with these tips. More >
©2009 About.com, a part of The New York Times Company.
All rights reserved.