Definition of anaconda noun from the Oxford Advanced Learner's Dictionary

 

anaconda

 noun
noun
BrE BrE//ˌænəˈkɒn//
 
; NAmE NAmE//ˌænəˈkɑːn//
 
Amphibians and reptiles
 
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a large S American snake of the boa family, that crushes other animals to death before eating them See related entries: Amphibians and reptiles Word Origin mid 18th cent. (originally denoting a kind of Sri Lankan snake): unexplained alteration of Latin anacandaia ‘python’, from Sinhalese henakaňdayā ‘whip snake’, from hena ‘lightning’ + kaňda ‘stem’.
See the Oxford Advanced American Dictionary entry: anaconda