or British anaesthetic /ˌænəsˈθɛtɪk/
Learner's definition of ANESTHETIC
: a drug that causes a person to lose feeling and to feel no pain in part or all of the body
The doctor gave him the stitches without an anesthetic.
The surgery required a general anesthetic. [=a drug that makes a person unconscious and unable to feel pain]
a local anesthetic [=a drug that makes a part of the body unable to feel pain]
— anesthetic(US)or Britishanaestheticadjective