embrocation
Concise Oxford English Dictionary © 2008 Oxford University Press:
embrocation /ˌɛmbrəˈkeɪʃ(ə)n/
▶noun a liquid medication rubbed on the body to relieve pain from sprains and strains.
– origin ME: from med. L. embrocatio(n-), from embrocare, based on Gk embrokhē ‘lotion’.
'embrocation' also found in these Oxford entries:

