castoreum

castoreum eī, n

1 castor, castoreum, a strong-smelling secretion of the beaver : virosa, V.

castoreum
castŏrĕum, ei, n. [1. castor], castor or castoreum , a secretion of the beaver having a strong od...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
Castoreum
·noun A peculiar bitter orange-brown substance, with strong, penetrating odor, found in two sacs bet...

Webster's Dictionary of the English Language