firefly

fire·fly

[fahyuhr-flahy]
noun, plural fire·flies.
any nocturnal beetle of the family Lampyridae, characterized by a soft body with a light-producing organ at the rear of the abdomen.
Also called glowfly, lightning bug.
Compare glowworm.


Origin:
1650–60; fire + fly2

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World English Dictionary
firefly (ˈfaɪəˌflaɪ) [Click for IPA pronunciation guide]
 
n , pl -flies
1.  See also glow-worm any nocturnal beetle of the family Lampyridae, common in warm and tropical regions, having luminescent abdominal organs
2.  any tropical American click beetle of the genus Pyrophorus, esp P. noctiluca, that have luminescent thoracic organs

Collins English Dictionary - Complete & Unabridged 10th Edition
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00:10
Firefly is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a fool or simpleton; ninny.
Etymonline
Word Origin & History

firefly
1650s, from fire + fly.
Online Etymology Dictionary, © 2010 Douglas Harper
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