- Jam is defined as being in an intense or difficult situation, or is a preserve made from whole fruit and sugar.
- An example of a jam is a lot of traffic.
- An example of jam is what goes with peanut butter on a sandwich.
- To jam is defined as to shove in so something gets stuck, to squeeze into a tight space, or is a causal term for playing music.
- An example of to jam is for keys on the keyboard to get stuck.
- An example of to jam is to play the guitar with friends.
Too many clothes are jammed into this wardrobe.
transitive verbjammed, jamming
- to squeeze or wedge into or through a confined space
- to bruise or crush
- to force (a thumb, toe, etc.) back against its joint so as to cause impaction
- to push, shove, or crowd
- to pack full or tight
- to fill or block (a passageway, river, etc.) by crowding or squeezing in
- to wedge or make stick to prevent movement
- to put out of order by such jamming: to jam a rifle
- to make (radio broadcasts, radar signals, etc.) unintelligible, as by sending out other signals on the same wavelength
- ☆ Basketball, Slang stuff ()
Origin of jam; from uncertain or unknown; perhaps
- to become wedged or stuck fast
- to become unworkable through such jamming of parts
- to push against one another in a confined space
- ☆ Informal to improvise freely, esp. in a jam session
- a jamming or being jammed
- a group of persons or things so close together as to jam a passageway, etc.: a traffic jam
- ☆ Informal a difficult situation; predicament
- ☆ Informal jam session
- ☆ Basketball, Slang stuff ()
Origin of jam; from uncertain or unknown; perhaps jam
verbjammed jammed, jam·ming, jams
- To drive or wedge forcibly into a tight position: jammed the cork in the bottle.
- To activate or apply (a brake) suddenly. Often used with on: jammed the brakes on.
- To cause (moving parts, for example) to lock into an unworkable position: jammed the typewriter keys.
- a. To pack (items, for example) to excess; cram: jammed my clothes into the suitcase.b. To fill (a container or space) to overflowing: I jammed the suitcase with clothes. Fans jammed the hallway after the concert.
- To block, congest, or clog: a drain that was jammed by debris.
- To crush or bruise: jam a finger.
- Electronics To interfere with or prevent the clear reception of (broadcast signals) by electronic means.
- Baseball To throw an inside pitch to (a batter), especially to prevent the batter from hitting the ball with the thicker part of the bat.
- To become wedged or stuck: The coin jammed in the slot.
- To become locked or stuck in an unworkable position: The computer keyboard jammed.
- To force one's way into or through a limited space: We all jammed into the elevator.
- Music To participate in a jam session.
- Basketball To make a dunk shot.
- The act of jamming or the condition of being jammed.
- A crush or congestion of people or things in a limited space: a traffic jam.
- A trying situation. See Synonyms at predicament.
- See jam session.
Origin of jamOrigin unknown.
Origin of jamPossibly from jam1.
(countable and uncountable, plural jams)
- A sweet mixture of fruit boiled with sugar and allowed to congeal. Often spread on bread or toast or used in jam tarts.
- (countable) A difficult situation.
- I’m in a jam right now. Can you help me out?
- (countable) Blockage, congestion.
- A traffic jam caused us to miss the game's first period.
- a jam of logs in a river
- (countable) (popular music) An informal, impromptu performance or rehearsal.
- (countable, baseball) A difficult situation for a pitcher or defending team.
- He's in a jam now, having walked the bases loaded with the cleanup hitter coming to bat.
- (countable, basketball) A forceful dunk.
- (countable) (roller derby) A play during which points can be scored.
- Toughie scored four points in that jam.
- (countable) Any of several rock-climbing maneuvers requiring wedging of an extremity into a tight space.
- I used a whole series of fist and foot jams in that crack.
- (UK) luck.
- He's got more jam than Waitrose.
- (mining) Alternative form of jamb.
(third-person singular simple present jams, present participle jamming, simple past and past participle jammed)
- To get something stuck in a confined space.
- My foot got jammed in a gap between the rocks.
- To brusquely force something into a space; cram, squeeze.
- They temporarily stopped the gas tank leak by jamming a piece of taffy into the hole.
- The rush-hour train was jammed with commuters.
- To cause congestion or blockage. Often used with "up"
- A single accident can jam the roads for hours.
- To block or confuse a broadcast signal.
- (baseball) To throw a pitch at or near the batter's hands.
- Jones was jammed by the pitch.
- (music) To play music (especially improvisation as a group, or an informal unrehearsed session.)
- To injure a finger or toe by sudden compression of the digit's tip.
- When he tripped on the step he jammed his toe.
- (roller derby) To attempt to score points.
- Toughie jammed four times in the second period.
- (nautical) To bring (a vessel) so close to the wind that half her upper sails are laid aback.
jam - Computer Definition
(JYACC Application Manager) An application development system for client/server environments from Prolifics, New York (www.jyacc.com), a JYACC company. It supports Windows, Mac and Motif clients and most Unix servers and VMS. It supports over 20 databases and includes its own database (JDB) for prototyping. JAM/CASE allows CASE information to be moved into JAM. JAM/TPi integrates JAM with the Tuxedo and Encina TP monitors.