Definition of "knucklebone" []

• A knobbed bone, as of a knuckle or joint. (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.

• "Sheep knucklebone floors were a passing fad among 19th-century estate owners, used for decorating gothic grottos and the like."
• "Just after the photo Pritch nabbed a knucklebone as large as her head ... who can blame her?"
• "It was a huge knucklebone from a cow, I think, or a pig."