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

 

lidocaine

 noun
noun
BrE BrE//ˈlɪdəkeɪn//
 
, also BrE//ˈlɪdəʊkeɪn//
 
; NAmE NAmE//ˈlɪdəkeɪn//
 
(also lignocaine)[uncountable]
 
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a substance used as a local anaesthetic, for example to stop people feeling pain when teeth are removed Word Origin 1940s: from (acetani)lid(e) + -caine (from cocaine).
See the Oxford Advanced American Dictionary entry: lidocaine