A sudden, sharp cracking sound or movement. A small fastener on clothing, engaged by pressing its two halves together. An easy task. A quick backward movement of the ball from the ground that begins a play. A snapshot. A card game in which cards from two piles are turned over simultaneously and players call “snap” as quickly as possible when two similar cards are exposed. Break or cause to break suddenly and completely, typically with a sharp cracking sound. Take a snapshot of. Put (the ball) into play by a quick backward movement from the ground. Fasten with snaps. Done or taken on the spur of the moment, unexpectedly, or without notice.