The Collaborative International Dictionary of English v.0.48:

Snapping \Snap"ping\,
   a. & n. from Snap, v.
   [1913 Webster]

   Snapping beetle. (Zool.) See Snap beetle, under Snap.


   Snapping turtle. (Zool.)
   (a) A large and voracious aquatic turtle (Chelydra
       serpentina) common in the fresh waters of the United
       States; -- so called from its habit of seizing its prey
       by a snap of its jaws. Called also mud turtle.
   (b) See Alligator snapper, under Alligator.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Elater \El"a*ter\, n. [NL., fr. Gr. ? driver, fr. ? to drive.]
   1. (Bot.) An elastic spiral filament for dispersing the
      spores, as in some liverworts.
      [1913 Webster]

   2. (Zo["o]l.) Any beetle of the family Elaterid[ae], having
      the habit, when laid on the back, of giving a sudden
      upward spring, by a quick movement of the articulation
      between the abdomen and thorax; -- called also click
      beetle, spring beetle, and snapping beetle.
      [1913 Webster]

   3. (Zo["o]l.) The caudal spring used by Podura and related
      insects for leaping. See Collembola.
      [1913 Webster]

WordNet (r) 3.0 (2006):

snapping beetle
    n 1: able to right itself when on its back by flipping into the
         air with a clicking sound [syn: click beetle, skipjack,
         snapping beetle]