Derogatory prison slang for an individual who participates in a homosexual relationship while incarcerated. The "gump" may be on either the giving or receiving end, and the sexual intercourse may be consensual or forced; usually the latter.
"What a lot of dudes didn't know though was that Gaps was an old gump from way back. Dude was a predator..."
Gump is a word typically used to describe ppl that are clumsy, geeky, or even stupid. you can use gump in many situations. You can say gump, gumpy, gumper, or you can even tell somebody that they gumped it.