Source : Webster's Revised Unabridged Dictionary (1913)

Quercite \Quer"cite\, n. (Chem.)
   A white crystalline substance, {C6H7(OH)5}, found in acorns,
   the fruit of the oak ({Quercus}). It has a sweet taste, and
   is regarded as a pentacid alcohol.

Quercitrin \Quer"cit*rin\, n. [Cf. F. quercitrin. See
   {Quercitron}.] (Chem.)
   A glucoside extracted from the bark of the oak ({Quercus}) as
   a bitter citron-yellow crystalline substance, used as a
   pigment and called {quercitron}.

Quercus \Quer"cus\, n. [L., an oak.] (Bot.)
   A genus of trees constituted by the oak. See {Oak}.

Source : WordNet®

Quercus
     n : oaks [syn: {genus Quercus}]