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

 

cobra

 noun
noun
BrE BrE//ˈkəʊbrə//
 
; NAmE NAmE//ˈkoʊbrə//
 
Amphibians and reptiles
 
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a poisonous snake that can spread the skin at the back of its neck to make itself look bigger. Cobras live in Asia and Africa. See related entries: Amphibians and reptiles Word Origin mid 17th cent.: from Portuguese cobra de capello, literally ‘snake with hood’, based on Latin colubra ‘snake’.
See the Oxford Advanced American Dictionary entry: cobra