GNU Collaborative International Dictionary of English

Found one definition

1.       
   Ranunculus , n.; pl. E. Ranunculuses , L. Ranunculi . [L., a little frog, a medicinal plant, perhaps crowfoot, dim. of rana a frog; cf. raccare to roar.] (Bot.) A genus of herbs, mostly with yellow flowers, including crowfoot, buttercups, and the cultivated ranunculi (Ranunculus Asiaticus, Ranunculus aconitifolius, etc.) in which the flowers are double and of various colors.
   1913 Webster