|—vb (often foll by on) , jams, jamming, jammed|
|1.||(tr) to cram or wedge into or against something: to jam paper into an incinerator|
|2.||(tr) to crowd or pack: cars jammed the roads|
|3.||to make or become stuck or locked: the switch has jammed|
|4.||to activate suddenly (esp in the phrase jam on the brakes)|
|5.||(tr) to block; congest: to jam the drain with rubbish|
|6.||(tr) to crush, bruise, or squeeze; smash|
|7.||radio to prevent the clear reception of (radio communications or radar signals) by transmitting other signals on the same frequency|
|8.||slang (intr) to play in a jam session|
|9.||a crowd or congestion in a confined space: a traffic jam|
|10.||the act of jamming or the state of being jammed|
|11.||informal a difficult situation; predicament: to help a friend out of a jam|
|12.||See jam session|
|[C18: probably of imitative origin; compare |
v. jammed, jam·ming, jams
To block, congest, or clog.
To crush or bruise.
see under get in a bind.