Definitions
1.nounA sweet mixture of fruit boiled with sugar and allowed to congeal. Often spread on bread or toast or used in jam tarts.
2.nounA difficult situation.
3.nounBlockage, congestion."A traffic jam caused us to miss the game's first period."
4.nounAn informal, impromptu performance or rehearsal.
5.noun(by extension) A song; a track.
6.noun(by extension) An informal event where people brainstorm and collaborate on projects.
7.verbTo get something stuck in a confined space."Her poor little baby toe got jammed in the door."
8.verbTo brusquely force something into a space; cram, squeeze."The rush-hour train was jammed with commuters."
9.verbTo cause congestion or blockage. Often used with "up""A single accident can jam the roads for hours."
10.verbTo block or confuse a broadcast signal.
11.verbTo throw a pitch at or near the batter's hands."Jones was jammed by the pitch."
12.verbTo play music (especially improvisation as a group, or an informal unrehearsed session).
13.verbTo injure a finger or toe by sudden compression of the digit's tip."When he tripped on the step he jammed his toe."
14.verbTo attempt to score points."Toughie jammed four times in the second period."
15.verbTo bring (a vessel) so close to the wind that half her upper sails are laid aback.
16.verbTo give up on a date or some joint endeavour; stand up, chicken out, jam out.