jam >> /dʒæm/
Definition: [verb] Squeeze or pack tightly into a specified space.
Example: four of us were jammed in one compartment
Definition: [verb] Become or make unable to move or work due to a part seizing or becoming stuck.
Example: the photocopier jammed
Definition: [verb] Improvise with other musicians, especially in jazz or blues.
Definition: [noun] An instance of a machine or thing seizing or becoming stuck.
Example: paper jams
Definition: [noun] An awkward situation or predicament.
Definition: [noun] An informal gathering of musicians improvising together, especially in jazz or blues.(especially in dance or urban music) a song or track.
Example: Just as jazz musicians improvise in a jam session, two or more painters hold a visual dialogue where non-verbal expression provokes a response that in turn provokes a reaction from a partner.