a drug or gas that is given to someone before a medical operation to stop them feeling painAn anaesthetic that affects the whole of your body by making you unconscious is called a general anaesthetic and an anaesthetic that affects only a part of your body is called a local anaesthetic 麻醉药；麻醉剂
The procedure is usually carried out under anaesthetic. 整个过程通常在麻醉状态下进行。