American English

Definition of grass noun from the Oxford Advanced American Dictionary



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  1. 1[uncountable] a very common plant with long, narrow, green leaves, that grows wild and in parks and yards, and is eaten by cows, horses, sheep, etc. a blade of grass The dry grass caught fire.
  2. 2[countable] any type of grass ornamental grasses
  3. 3[singular, uncountable] the grass an area of ground covered with grass to cut/mow the grass Don't walk on the grass. Keep off the grass. (= on a sign)
  4. 4[uncountable] (slang) marijuana
  5. Idioms
    the grass is (always) greener on the other side (of the fence) (saying)
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    said about people who never seem happy with what they have and always think that other people have a better situation than they have
    not let the grass grow under your feet
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    to not delay in getting things done
    put somebody out to grass/pasture (informal)
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    to force someone to stop doing their job, especially because they are old
    a snake (in the grass) (disapproving)
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    a person who pretends to be your friend but who cannot be trusted
See the Oxford Advanced Learner's Dictionary entry: grass