lig·no·caine
noun/ˈlɪɡnəkeɪn/
/ˈlɪɡnəkeɪn/
(also lidocaine)
[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 Origin1950s: from ligno- (Latin equivalent of xylo-, used in the earlier name xylocaine and reflecting chemical similarity to xylene) + -caine (from cocaine).