li·do·caine
noun/ˈlaɪdəkeɪn/
/ˈlaɪdəkeɪn/
(also lignocaine)
[uncountable]- a substance used as a local anaesthetic, for example to stop people feeling pain when teeth are removed
利多卡因（局部麻醉药） Word Origin1940s: from (acetani)lid(e) + -caine (from cocaine).