D defs.my
Entry 2 senses Webster, 1913

Lupulin

· Lu·pu·lin · IPA /ˈlupjəlɪn/
01 n. A bitter principle extracted from hops.
  1. 1.
    A bitter principle extracted from hops.(Chem.)
  2. 2.
    The fine yellow resinous powder found upon the strobiles or fruit of hops, and containing this bitter principle.