Source : Webster's Revised Unabridged Dictionary (1913)

Jonquil \Jon"quil\, Jonquille \Jon"quille\, n. [F. jonquille,
   fr. L. juncus a rush, because it has rushlike leaves.] (Bot.)
   A bulbous plant of the genus Narcissus ({N. Jonquilla}),
   allied to the daffodil. It has long, rushlike leaves, and
   yellow or white fragrant flowers. The root has emetic
   properties. It is sometimes called the {rush-leaved
   daffodil}. See Illust. of {Corona}.