grass is on the Basic English 850 List.
grain - grass - great

Pronunciation change

Noun change

Singular
grass

Plural
grasses

(uncountable)

 
Cut grass
 
Wild grass
  1. Grass is a green, leafy plant that often covers the ground.
    We haven't got much rain, and the grass on the lawn is turning brown.
  2. (slang) Marijuana