The Collaborative International Dictionary
Doob grass
Doob grass \Doob" grass`\ [Hind. d?b.] (Bot.) A perennial, creeping grass ( Cynodon dactylon), highly prized, in Hindostan, as food for cattle, and acclimated in the United States. [Written also doub grass.]
Wiktionary
doob grass
n. (context botany English) A perennial creeping grass ((taxlink Cynodon dactylon species)), highly prized in Hindustan as food for cattle, and acclimated in the United States.