jazz · noun, verb1
Unknown. First attested around 1912 in a discussion of baseball; attested in reference to music around 1915. Numerous references suggest that the term may be connected to jasm and jism.
Jazz · proper noun2
First known use, by meaning
- from 20th c. To move (around/about) in a lively or frivolous manner; to fool around.
Etymology from Wiktionary, CC BY-SA 4.0.