Narcissus \Nar*cis"sus\, n.; pl. Narcissuses. [L. narcissus, and (personified) Narcissus, Gr. na`rkissos, Na`rkissos, fr. na`rkh torpor, in allusion to the narcotic properties of the flower. Cf. Narcotic.]

1. (Bot.) A genus of endogenous bulbous plants with handsome flowers, having a cup-shaped crown within the six-lobed perianth, and comprising the daffodils and jonquils of several kinds.

2. (Classical Myth.) A beautiful youth fabled to have been enamored of his own image as seen in a fountain, and to have been changed into the flower called Narcissus.

Source: Webster's Revised Unabridged Dictionary (1913)