Acronym of generally regarded as safe and effective.

Little bluestem (Schizachyrium scoparium) and others of the genus Schizachyrium. / Big bluestem (Andropogon gerardii) and others of the genus Andropogon

Arrhenatherum species / Avenula species / Danthonia californica, California oatgrass / Trisetum species

A species of grass, Elymus repens, usually considered a weed.

Able to be grasped / Able to be understood or comprehended; understandable

Alternative spelling of grassroots

Any of several grasses, of the genus Eragrostis, grown as a forage crop or to protect against erosion

plural of grasp

Third-person singular simple present indicative form of grasp

(idiomatic, rare) A married man whose spouse is away. / A divorcé.