Source : Webster's Revised Unabridged Dictionary (1913)

Polygala \Po*lyg"a*la\, n. [L., milkwort, fr. Gr. ?; poly`s much
   + ? milk.]
   A genus of bitter herbs or shrubs having eight stamens and a
   two-celled ovary (as the Seneca snakeroot, the flowering
   wintergreen, etc.); milkwort.

Source : WordNet®

Polygala
     n : type genus of the Polygalaceae: milkwort; seneca; snakeroot
         [syn: {genus Polygala}]