jonquil (n.) Look up jonquil at
1660s, species of narcissus, from French jonquille (17c.), from Spanish junquillo, diminutive of junco "rush, reed," from Latin iuncus "reed, rush," from Proto-Italic *joiniko-, from PIE *ioi-ni- (cognates: Middle Irish ain "reeds, rushes," Old Norse einir, Swedish en "juniper"). So called in reference to the form of its leaves.

From 1791 as the name of a pale yellow color, like that of the flower, and thus a type of canary bird (1865) of that color.