Synonyms for Tall Oat Grass (same or very similar meaning)
WordNet sense 1 (coarse perennial Eurasian grass resembling oat; found on roadside verges and rough grassland and in hay meadows; introduced in North America for forage):
Arrhenatherum elatius, evergreen grass, false oat, French rye, tall meadow grassFrom the ODE community, based on WordNetadd/edit