- 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.Licensed from iStockPhoto
- 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: 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: from uncertain or unknown; perhaps jam
Used by arrangement with John Wiley & Sons, Inc.
verb jammed jammed, jam·ming, jams verb, transitive
- 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.
- To become inoperable: The computer keyboard jammed.
- To force one's way into or through a limited space.
- 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.
Origin: Origin unknown.
- jamˈma·ble adjective
- jamˈmer noun
Origin: Possibly from jam1.
- jamˈmy adjective
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.
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jam - Medical Definition
- To block, congest, or clog.
- To crush or bruise.