Dusty, pseudo-fecal residue that accumulates in the bottom and corners of a jigsaw puzzle box.
"Hey dickwad! You got puzzleshit all over my patent leather pumps!"
by Charlie Coniton April 29, 2003
The dusty residue excreted by individual pieces of a jigsaw puzzle in the box.
"Watch out, asshole, you got puzzleshit on my black pumps!"
by G. Delaney April 28, 2003