The Collaborative International Dictionary of English v.0.48:

Carambola \Ca`ram*bo"la\, n. (Bot.)
   An East Indian tree (Averrhoa Carambola), and its acid,
   juicy fruit; called also Coromandel gooseberry.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Averrhoa carambola
    n 1: East Indian tree bearing deeply ridged yellow-brown fruit
         [syn: carambola, carambola tree, Averrhoa carambola]