The Collaborative International Dictionary of English v.0.48:
euphrasy \eu"phra*sy\ ([=u]"fr[.a]*s[y^]), n. [NL. euphrasia,
fr. Gr. e'yfrasi`a delight, fr. e'yfrai`nein to delight; e'y^
well + frh`n heart, mind: cf. LL. eufrasia, F. eufraise.]
(Bot.)
The plant eyebright (Euphrasia officionalis), formerly
regarded as beneficial in disorders of the eyes.
[1913 Webster]
Then purged with euphrasy and rue
The visual nerve, for he had much to see. --Milton.
[1913 Webster]
The Collaborative International Dictionary of English v.0.48:
Eyebright \Eye"bright`\, n. (Bot.)
A small annual plant (Euphrasia officinalis), formerly much
used as a remedy for diseases of the eye.
[1913 Webster]