The Collaborative International Dictionary
Frangulin
Frangulin \Fran"gu*lin\, n. (Chem.) A yellow crystalline dyestuff, regarded as a glucoside, extracted from a species ( Rhamnus Frangula) of the buckthorn; -- called also rhamnoxanthin.
Wiktionary
frangulin
n. (context organic compound English) A yellow crystalline dyestuff extracted from a species of buckthorn, (taxlink Rhamnus frangula species noshow=1).