A kind of frock for children.
- 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.
- To pack (items, for example) to excess; cram: jammed my clothes into the suitcase.
- 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.
- A preserve made from whole fruit boiled to a pulp with sugar.