Wordnet 3.0
NOUN (1)
1. 
 trailing grass native to Europe now cosmopolitan in warm regions; 
 used for lawns and pastures especially in southern United States and India; 
[syn: Bermuda grass, devil grass, Bahama grass, kweek, doob, scutch grass, star grass, Cynodon dactylon]
WordNet (r) 3.0 (2006):
doob
    n 1: trailing grass native to Europe now cosmopolitan in warm
         regions; used for lawns and pastures especially in southern
         United States and India [syn: Bermuda grass, devil
         grass, Bahama grass, kweek, doob, scutch grass,
         star grass, Cynodon dactylon]