Lupuline \Lu"pu*line\, n. [NL. lupulus the hop, fr. L. lupus the hop: cf. F. lupuline.] (Chem.) An alkaloid extracted from hops as a colorless volatile liquid. [1913 Webster]
Lupulin \Lu"pu*lin\, n. [Cf. F. lupulin. See {Lupuline}.] 1. (Chem.) A bitter principle extracted from hops. [1913 Webster] 2. The fine yellow resinous powder found upon the strobiles or fruit of hops, and containing this bitter principle. [Written also {lupuline}.] [1913 Webster]