Source : Webster's Revised Unabridged Dictionary (1913)

Embrocation \Em`bro*ca"tion\, n. [NL. embrocatio: cf. F.
   embrocation.] (Med.)
   (a) The act of moistening and rubbing a diseased part with
       spirit, oil, etc.
   (b) The liquid or lotion with which an affected part is
       rubbed.

Source : WordNet®

embrocation
     n : a medicinal liquid that is rubbed into the skin to relieve
         muscular stiffness and pain [syn: {liniment}]