What exactly are endives?

Question

What exactly are endives?

Answer 1

endive is a plant, eaten like salad

Answer 2

http://en.wikipedia.org/wiki/Endive

Answer 3

Also called Belgian endive, French endive, witloof. a young chicory plant, deprived of light to form a narrow head of whitish leaves that are eaten as a cooked vegetable or used raw in salads.