ANAESTHETIC

[esp. US] anesthetic [noun] [U]An anaesthetic is a substance that makes you unable to feel pain.We'll take your tooth out under anaesthetic.Conditions are now so primitive in the town clinic that operations are frequently performed without anaesthetic.A general anaesthetic is a drug which causes unconsciousness.A local anaesthetic causes loss of feeling just in one part of the body.Sir Humphrey Davy discovered the anaesthetic effect of laughing gas.