oat grass

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various grasses that resemble the oat.

from The Century Dictionary.

• noun The wild species of Avena.
• noun Another grass, Arrhenatherum avenaceum.
• noun A grass of the genus Danthonia, distinguished sometimes as wild oat-grass.
• noun In New South Wales, Themeda gigantea, a grass generally growing in tussocks, sending its roots deep and thus able to withstand drought. It yields a large amount of forage in its basal leaves, is suitable for ensiling if cut early, and has the advantage of seeding freely.
• noun The wild oat, Avena fatua.
• noun The Indian grass, Sorghastrum avenaceum. See Indian grass .
• noun Same as feather bunch-grass.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One of the various Eurasian and African grasses Arrhenatherum and Danthonia.