n. 毛茛属植物

[ noun ]
any of various plants of the genus Ranunculus
<noun.plant>

Buttercup \But"ter*cup`\, n. (Bot.)
A plant of the genus {Ranunculus}, or crowfoot, particularly
{Ranunculus bulbosus}, with bright yellow flowers; -- called
also {butterflower}, {golden cup}, and {kingcup}. It is the
{cuckoobud} of Shakespeare.

Cuckoobud \Cuck"oo*bud"\ (k??k"??-b?d`), n. (Bot.)
A species of {Ranunculus} ({Ranunculus bulbosus}); -- called
also {butterflower}, {buttercup}, {kingcup}, {goldcup}.
--Shak.