Source : Webster's Revised Unabridged Dictionary (1913)

Endive \En"dive\, n. [F. endive (cf. Pr., Sp. Pg., & It.
   endivia), fr. a deriv. of L. intibus, intybus, endive.]
   (Bot.)
   A composite herb ({Cichorium Endivia}). Its finely divided
   and much curled leaves, when blanched, are used for salad.

   {Wild endive} (Bot.), chicory or succory.

Source : WordNet®

Cichorium endivia
     n : widely cultivated herb with leaves valued as salad green;
         either curly serrated leaves or broad flat ones that are
         usually blanched [syn: {endive}, {witloof}]