noun.
A large genus of grasses, distributed over the globe, and valuable especially for pasturage.
the GNU version of the Collaborative International Dictionary of English
noun.
A genus of grasses, including species called in common language bent grass. Some of them, as redtop (Agrostis vulgaris), are valuable pasture grasses.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
annual or perennial grasses cosmopolitan in northern hemisphere: bent grass (so named from `bent' meaning an area of unfenced grassland)
Word Usage
"The grass here consisted principally of agrostis, near the river, where the land is occasionally inundated, and of uniola, a little further back, growing in tufts."