A sharpened piece of metal used as a weapon, Texas prison slang.
He assaulted an inmate with a jigger.
A black person with identity issues who disposes of their own origins and attempts to make others think they are and always were, Japanese.
Can also work the opposite way with a japanese person thinking they are black.
'yo, you see shaniqua? she calls her self shaniqua-chan and goes around trying to speak Japanese...'
'another jigger.'
same word as the n-word, but worse
dude, there's a bunch of jiggers in the bar