a meeting of a group of musicians, especially jazz musicians, to play for their own enjoyment.
an impromptu jazz performance or special performance by jazz musicians who do not regularly play together.
A Brief History Of Writing InstrumentsThe quill fueled most written communication from the 6th to the 19th century. Quills were made of hollow bird feathers, most commonly goose feathers.
Meet The Man Responsible For The Letter “J”From its humble beginnings as a Roman numeral to its eventual tenth position in the English alphabet, J has had quite a linguistic journey. When was J added to the alphabet? J is a bit of a late bloomer; after all, it was the last letter added to the alphabet. It is no coincidence that I and J stand side by side—they actually started out as the same …
Also called jam.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for jam session
slang an unrehearsed or improvised jazz or rock performance
Word Origin for jam session
C20: probably from jam 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012