lantern jaw

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lantern jaw

n.
1. A lower jaw that protrudes beyond the upper jaw.
2. A long, thin jaw that gives the face a gaunt appearance.

lan′tern-jawed′ (-jôd′) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.