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

 

sidewinder

 noun
noun
BrE BrE//ˈsaɪdwaɪndə(r)//
 
; NAmE NAmE//ˈsaɪdwaɪndər//
 
Amphibians and reptiles
 
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a poisonous N American snake that moves sideways across the desert by throwing its body in an S shape See related entries: Amphibians and reptiles
See the Oxford Advanced American Dictionary entry: sidewinder