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.

a caterpillar of a 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