Wordnet 3.0
VERB (1)
1. 
 prevent or interrupt due to rain; 
- Example: "The storm had washed out the game"[syn: rain out, wash out]
WordNet (r) 3.0 (2006):
rain out
    v 1: prevent or interrupt due to rain; "The storm had washed out
         the game" [syn: rain out, wash out]