jimmy · noun, verb1
* * (chocolate sprinkles): Unknown. There is much speculation that they were named after Jim Crow, but there is little, if any, evidence to support this theory.
Jimmy · proper noun, noun2
Jimmy · proper noun3
From the initialism GM (/ˌd͡ʒiˈɛm/), by jocular alteration of sound playing on the diminutive given name.
Etymology from Wiktionary, CC BY-SA 4.0.