Definition of "sheath knife" []

• A knife that has a fixed blade and fits into a sheath. (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.

• "When the bleeding headless body staggered about the yard in the time-honored habit of sots, Ruby pointed to it with her ragged sheath knife and said, “That's your sustenance there.”"