Anaesthetic/ˌænəsˈθetɪk/ Definition 1 of 3Pro Tip 1/3Pain Control Anaesthetics are used for pain control during medical procedures. Before stitching the wound, the doctor applied an anaesthetic. Pro Tip 2/3Variety of Forms Anaesthetics can be gases, liquids, or creams depending on the application needed. For a minor surgery, the nurse applied an anaesthetic cream. Pro Tip 3/3Level of Consciousness General anaesthetics make you unconscious, while local anaesthetics do not. The local anaesthetic numbed my tooth without making me sleepy.