'Convolvulus' definitions:

Definition of 'convolvulus'

noun

Any of numerous plants of the genus Convolvulus

From: GCIDE

Convolvulus \Con*vol"vu*lus\ (k[o^]n*v[o^]l"v[-u]*l[u^]s), n.; pl. L.Convolvuli, E. Convoluluses. [L., bindweed, fr. convolvere to roll around. So named from its twining stems.] (Bot.) A large genus of plants having monopetalous flowers, including the common bindweed (Convolvulus arvensis), and formerly the morning-glory, but this is now transferred to the genus Ipom[ae]a. [1913 Webster]
The luster of the long convolvuluses That coiled around the stately stems. --Tennyson. [1913 Webster]