Wordnet 3.0
NOUN (2)
1. 
 a tuberous twining annual vine bearing clusters of purplish flowers and pods with four jagged wings; 
 Old World tropics; 
[syn: winged bean, winged pea, goa bean, goa bean vine, Manila bean, Psophocarpus tetragonolobus]
2.  Old World tropical bean; 
WordNet (r) 3.0 (2006):
goa bean
    n 1: a tuberous twining annual vine bearing clusters of purplish
         flowers and pods with four jagged wings; Old World tropics
         [syn: winged bean, winged pea, goa bean, goa bean
         vine, Manila bean, Psophocarpus tetragonolobus]
    2: Old World tropical bean