The use of a local anaesthetic (usually injected into the tissue) results in a small region of anaesthesia (numbness). Lidocaine (Xylocaine) or (Marcaine) are commonly used. ... (27 Sep 1997) ... 
is used to temporarily reduce or take away painful sensation so that otherwise painful procedures or surgery can be performed
a substance that numbs a specific area of the body
A local anaesthetic is a drug that is injected by needle or applied as a cream, which causes a loss of feeling in a specific area of the body.