Castoreum

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Castoreum \Cas*to"re*um\, n. [L. See {Castor}.]
     A peculiar bitter orange-brown substance, with strong,
     penetrating odor, found in two sacs between the anus and
     external genitals of the beaver; castor; -- used in medicine
     as an antispasmodic, and by perfumers.
     [1913 Webster]