The Collaborative International Dictionary of English v.0.48:
Asarone \As"a*rone\, n. [L. asarum hazelwort, wild spikenard, Gr. 'a`saron] (Chem.) A crystallized substance, resembling camphor, obtained from the Asarum Europ[ae]um; -- called also camphor of asarum. [1913 Webster]