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Definition of "knife" []

  • A cutting instrument consisting of a sharp blade attached to a handle. (noun)
  • A cutting edge; a blade. (noun)
  • To use a knife on, especially to stab; wound with a knife. (verb-transitive)
  • Informal To betray or attempt to defeat by underhand means. (verb-transitive)
  • To cut or slash a way through something with or as if with a knife: The boat knifed through the waves. (verb-intransitive)

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.

Use "knife" in a sentence
  • "Somebody comes forward, examines, and then draws from out the grave, where it has lain, directly under the body, a knife -- a knife of peculiar shape and workmanship -- a long, keen, _surgeon's knife_!"
  • "A man with a knife is approaching a woman with her baby."
  • "If you don't have a gun, then a knife is the best survival tool."