The Collaborative International Dictionary of English v.0.48:

Fritillaria \Frit"il*la`ri*a\, n. [NL., fr. L. fritillus
   dicebox: cf. F. fritillaire. So named from the checkered
   markings of the petals.] (Bot.)
   A genus of liliaceous plants, of which the crown-imperial
   (Fritillaria imperialis) is one species, and the Guinea-hen
   flower (F. Meleagris) another. See Crown-imperial.
   [1913 Webster]