The Collaborative International Dictionary of English v.0.48:

Pelota \Pe*lo"ta\, n. [Sp., lit., ball.]
   A Basque, Spanish, and Spanish-American game played in a
   court, in which a ball is struck with a wickerwork racket.

   Syn: jai alai.
        [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

pelota
    n 1: a Basque or Spanish game played in a court with a ball and
         a wickerwork racket [syn: jai alai, pelota]