Definition of "hinge joint" []

• A joint, such as the elbow, in which a convex part of one bone fits into a concave part of another, allowing motion in only one plane. (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.