One who sneaks; one who moves stealthily to acquire an item or information.
My little brother is such a sneak; yesterday I caught him trying to look through my diary.
A cheat; a con artist.
I can't believe I gave that sneak $50 for a ticket when they were selling for $20 at the front gate.
An informer; a tell-tale.
A ball bowled so as to roll along the ground; a daisy-cutter
A sneaker; a tennis shoe.
A play where the quarterback receives the snap and immediately dives forward.