jam-v; 3 Senses

Sense Number 1: pack or fill to capacity

Protestors jammed into the atrium, shouting epithets and threatening reprisals.
Hair and other debris jammed the pipes.

VerbNet: spray-9.7-1-1
FrameNet: Filling
PropBank: jam.01
WordNet 3.0 Sense Numbers: 1, 6, 7

Sense Number 2: forcefully push or hit against or into

That is the third time I've jammed my toe on that table leg!
She didn't laugh when he jammed the pie into her face.
The media will jam the comparison down our throats.

VerbNet: hurt-40.8.3
FrameNet: Placing,Experience_bodily_harm
PropBank: NM
WordNet 3.0 Sense Numbers: 2, 3

Sense Number 3: stop or prevent functioning

These motors were kept running until the gears jammed because of the rust formation.
The very moment the government jammed the signal of Radio B92 in 1996, the international community was alerted.

VerbNet: NM
FrameNet: NM
PropBank: NM
WordNet 3.0 Sense Numbers: 4, 5