Definition of "jam" []

  • To drive or wedge forcibly into a tight position: jammed the cork in the bottle. (verb-transitive)
  • To activate or apply (a brake) suddenly. Often used with on: jammed the brakes on. (verb-transitive)
  • To cause (moving parts, for example) to lock into an unworkable position: jammed the typewriter keys. (verb-transitive)
  • To pack (items, for example) to excess; cram: jammed my clothes into the suitcase. (verb-transitive)
  • To fill (a container or space) to overflowing: I jammed the suitcase with clothes. Fans jammed the hallway after the concert. (verb-transitive)
  • To cram or wedge into or against something (verb)

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.

  • To crowd or pack (verb)
  • To make or become stuck or locked (verb)
  • To activate suddenly (esp in the phrase jam on the brakes) (verb)
  • To block; congest (verb)
  • To crush, bruise, or squeeze; smash (verb)
  • To prevent the clear reception of (radio communications or radar signals) by transmitting other signals on the same frequency (verb)
  • To play in a jam session (verb)
  • A crowd or congestion in a confined space (noun)
  • The act of jamming or the state of being jammed (noun)
  • A difficult situation; predicament (noun) (c) HarperCollins Publishers Ltd 2016

Use "jam" in a sentence
  • "The term jam-eating comes from when people worked in the mines."
  • "With the term jam band incorporating everything from blues to bluegrass these days, it's an overused handle that barely describes all the disparate bands lumped within its parameters."
  • "NOW, to celebrate this release, the SMD boys, some of their musical friends, and our pals at Modular UK are throwing a party TONIGHT in London - SMD will be there along with the Klaxons, Mystery Jets, Good Books, and the Modular and Ten Dead Sloanes DJ crews - the jam is at Sin (144 Charing Cross Road - WC2H 0LB) and costs six pounds in advance or eight with your student union card."