The Collaborative International Dictionary of English v.0.48:

Boddhisatva \Boddhisatva\ n.
   a Buddhist, worthy of nirvana, who postpones it to help
   others.

   Syn: Bodhisattva.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Boddhisatva
    n 1: Buddhist worthy of nirvana who postpones it to help others
         [syn: Bodhisattva, Boddhisatva]