anesthyl

from WordNet (r) 3.0 (2006)

anesthyl
    n 1: a mixture of methyl and ethyl chloride; sprayed on as a
         local anesthetic

from The Collaborative International Dictionary of English v.0.48

anesthyl \anesthyl\ n.
   A mixture of methyl chloride and ethyl chloride; it is used
   as a local anesthetic, by spraying onto the skin.
   [WordNet 1.5]