firefly

from WordNet (r) 3.0 (2006)

firefly
    n 1: tropical American click beetle having bright luminous spots
         [syn: {firefly}, {fire beetle}, {Pyrophorus noctiluca}]
    2: nocturnal beetle common in warm regions having luminescent
       abdominal organs [syn: {firefly}, {lightning bug}]

from The Collaborative International Dictionary of English v.0.48

Firefly \Fire"fly`\, n.; pl. {Fireflies}. (Zool.)
   Any luminous winged insect, esp. luminous beetles of the
   family {Lampyrid[ae]}.
   [1913 Webster]

   Note: The common American species belong to the genera
         {Photinus} (especially {Photinus pyralis}) and
         {Photuris}, in which both sexes are winged. The name is
         also applied to luminous species of {Elaterid[ae]}. See
         {Fire beetle}.
         [1913 Webster +PJC]

from Moby Thesaurus II by Grady Ward, 1.0

31 Moby Thesaurus words for "firefly":
      blink, blinking, candle fly, coruscation, fire beetle, fireworm,
      glimmer, glimmering, glisten, glister, glitter, glittering,
      glowworm, lampyrid, lantern fly, lightning bug, luciferase,
      luciferin, luminophor, phosphor, scintilla, scintillation, shimmer,
      shimmering, spangle, spark, sparkle, stroboscopic light, tinsel,
      twinkle, twinkling

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