endive means: Plant with curly, dark-green leaves. (in Cooking Dictionary)
What else does endive mean?
Endive is closely related to chicory and can be confused with it. There are two types of endive: curly and Belgian. Belgian endive has a creamy white, oblong shape with pale yellow tips. It is grown in total darkness to keep it from turning green. Curly endive is a bitter-tasting variety with prickly, dark green leaves. (in Cooking Dictionary)
Plant (Cichorium endivia) The composite family includes leaves of South Asian origin that have been curled or ruffled and bitter-flavored. These can be used as salad greens. (in Merlin Dictionary)
There are many varieties of common chicory (Cichorium intybus) This variety is cultivated for the production of a small, pointed and blanched group of leaves that can be used as salad greens. (in Merlin Dictionary)