Search Result for "crotalus": 
Wordnet 3.0

NOUN (1)

1. large rattlesnakes; seldom bite unless startled or pursuing prey;
[syn: Crotalus, genus Crotalus]

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2 definitions retrieved:

The Collaborative International Dictionary of English v.0.48:

Crotalus \Crot"a*lus\ (-l?s), n. [NL., fr. Gr. ???? rattle.] (Zool.) A genus of poisonous serpents, including the rattlesnakes. [1913 Webster]
WordNet (r) 3.0 (2006):

Crotalus n 1: large rattlesnakes; seldom bite unless startled or pursuing prey [syn: Crotalus, genus Crotalus]