Source : Webster's Revised Unabridged Dictionary (1913)

Erythronium \Er`y*thro"ni*um\, n. [NL., from Gr. ? a kind of
   plant, fr. 'eryqro`s red.] (Chem.)
   A name originally given (from its red acid) to the metal
   vanadium. [R.]

Source : WordNet®

Erythronium
     n : perennial bulbous herbs most of northern United States:
         dogtooth violet; adder's tongue; trout lily; fawn lily
         [syn: {genus Erythronium}]