Top definition
Jazz slang for a hard played improvised musical session, often in the company of non-band members.
Man, that cat Diz can blow a damp jam!
by Sphygmo19 February 25, 2011
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug