Meaning of “jam” - Learner’s Dictionary


verb us uk /dʒæm/ present participle jamming, past tense and past participle jammed
jam sth in/into/on, etc

to push something somewhere firmly and tightly:

She jammed her hands into her pockets.
STUCK [ I, T ]

to get stuck or make something get stuck:

The machine keeps jamming.
FILL [ T ]

to fill a place completely:

[ often passive ] The streets were jammed with cars.

to send a signal that stops a radio being able to broadcast

(Definition of “jam verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)