mooseknuckle noun2 •(slang) The visible bulge in a man's crotch, as a consequence of wearing tight pants... an afternoon sitting on the street with moose knuckle mooseknuckle the showing of testicles and cock through the crothch of tight pants ... — 2002 •(slang) An ugly cameltoeNo more of his talk about his bitch and her fat mooseknuckle of a puss bunched up in her acid-washed jeans. — 2011 formsmooseknuckles