The Collaborative International Dictionary of English v.0.48:

jambalaya \jam`ba*lay"a\ (j[u^]m`b[.a]*l[imac]"[.a]), n.
   A spicy Creole dish of rice with ham, sausage, chicken, or
   shellfish, plus tomatoes, and seasoned with peppers, onions,
   herbs, and celery.
   [WordNet 1.5]

WordNet (r) 3.0 (2006):

jambalaya
    n 1: spicy Creole dish of rice and ham, sausage, chicken, or
         shellfish with tomatoes, peppers, onions, and celery