Eū-phra'si-ā or Eū'phra-sy (yŭ'fra-sy), n.

n. [Gr. εὐφρασία, delight, from εὐφραίνειν, to delight, from εὖ, well, and φρήν, heart, mind; Fr. euphrasie.] (Bot.) The plant eyebright (Euphrasia officinalis), formerly regarded as beneficial in disorders of the eyes.

Then purged with euphrasy and rue The visual nerve, for he had much to see. Milton.