Yes, grass is a Scrabble word!

Verb

1. Shoot down, of birds

2. Cover with grass

3. Spread out clothes on the grass to let it dry and bleach

4. Cover with grass

5. Feed with grass

6. Give away information about somebody

Noun

1. Narrow-leaved green herbage: grown as lawns; used as pasture for grazing animals; cut and dried as hay

2. German writer of novels and poetry and plays (born 1927)

3. A police informer who implicates many people

4. Bulky food like grass or hay for browsing or grazing horses or cattle

5. Street names for marijuana