What is the meaning of Convolvulus?

Any of several plants, of the genus Convolvulus, found in temperate climates, having small trumpet-shaped flowers.

A species of hawkmoth, Agrius convolvuli.

the caterpillar of the vine moth (Eupoecilia ambiguella), which wraps itself up in the leaves of the vine

larger bindweed, hedge bindweed, Rutland beauty, bugle vine, heavenly trumpets, bellbind, granny-pop-out-of-bed (Calystegia sepium)

colic (severe pains that grip the abdomen, or the disease that causes such pains)

Source: wiktionary.org