Source : Webster's Revised Unabridged Dictionary (1913)

Coronilla \Cor`o*nil"la\ (k?r`?-n?l"l?), n. [NL., fr. L. corona
   crown: cf. F. coronille.] (Bot.)
   A genus of plants related to the clover, having their flowers
   arranged in little heads or tufts resembling coronets.

Source : WordNet®

coronilla
     n : any of various plants of the genus Coronilla having purple
         or pink or yellow flowers in long-spiked axillary heads
         or umbels