The Collaborative International Dictionary of English v.0.48:

escarole \escarole\ n. [Fr., from OFr. scariole. fr. LL.
   escariola, L. escarius of food, fit to eat, esca food, fr.
   edere to eat.]
   a variety of endive (Cichorium endivia) often used in
   salads, having leaves with irregular frilled edges.

   Syn: endive, curly endive.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

escarole
    n 1: variety of endive having leaves with irregular frilled
         edges [syn: chicory escarole, endive, escarole]