Snap, n.
 1. A sudden breaking or rupture of any substance.
 2. A sudden, eager bite; a sudden seizing, or effort to seize, as with the teeth.
 3. A sudden, sharp motion or blow, as with the finger sprung from the thumb, or the thumb from the finger.
 4. A sharp, abrupt sound, as that made by the crack of a whip; as, the snap of the trigger of a gun.
 5. A greedy fellow.
 6. That which is, or may be, snapped up; something bitten off, seized, or obtained by a single quick movement; hence, a bite, morsel, or fragment; a scrap.
 He's a nimble fellow,
 And alike skilled in every liberal science,
 As having certain snaps of all.   --B. Jonson.
 7. A sudden severe interval or spell; -- applied to the weather; as, a cold snap.
 8. A small catch or fastening held or closed by means of a spring, or one which closes with a snapping sound, as the catch of a bracelet, necklace, clasp of a book, etc.
 9. Zool. A snap beetle.
 10. A thin, crisp cake, usually small, and flavored with ginger; -- used chiefly in the plural.
 11. Briskness; vigor; energy; decision. [Colloq.]
 12. Any circumstance out of which money may be made or an advantage gained. [Slang]
 13. Any task, labor, set of circumstances, or the like, that yields satisfactory results or gives pleasure with little trouble or effort, as an easy course of study, a job where work is light, a bargain, etc. [Slang, Chiefly U. S.]
 14.  A snap shot with a firearm.
 15.  Photog. A snapshot.
 16.  Something of no value; as, not worth a snap. [Colloq.]
 Snap back Football, the act of snapping back the ball.
 Snap beetle, or Snap bug Zool., any beetle of the family Elateridae, which, when laid on its back, is able to leap to a considerable height by means of a thoracic spring; -- called also snapping beetle.
 Snap flask Molding, a flask for small work, having its sides separable and held together by latches, so that the flask may be removed from around the sand mold.
 Snap judgment, a judgment formed on the instant without deliberation.
 Snap lock, a lock shutting with a catch or snap.
 Snap riveting, riveting in which the rivets have snapheads formed by a die or swaging tool.
 Snap shot, a quick offhand shot, without deliberately taking aim.