2
a song that a person is particularly fond of, sometimes to the point of being their personal anthem or theme song. derived from the expression "jamming out".
"say mang, turn the radio up, this is my jam!"
by natasha elizabeth December 11, 2005
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5
2 or more musicians making music together but not an official band.
Guitarist Dude: Hey man i heard you got a drumset, we should jam sometime.

Noob Drummer: Sounds good, i havent gotten to play to music yet.
by The Real Corbin March 09, 2006
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7
dope or opiate derived drugs.i.e. oxycontin. heroin
i was straight noddin of them jams on the bus.
by joeski March 09, 2004
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