Definition of grass noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ɡrɑːs//
    ; NAmE NAmE//ɡræs//
    Solving crime, In the garden, Plants
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  1. 1   [uncountable] a common wild plant with narrow green leaves and stems that are eaten by cows, horses, sheep, etc. a blade of grass The dry grass caught fire. See related entries: Plants
  2. 2[countable] any type of grass ornamental grasses See related entries: Plants
  3. 3  [singular, uncountable] (also 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) See related entries: In the garden
  4. 4 [uncountable] (informal) marijuana
  5. 5[countable] (British English, informal, usually disapproving) a person, usually a criminal, who tells the police about somebody’s criminal activities and plans compare supergrass See related entries: Solving crime
  6. Word OriginOld English græs, of Germanic origin; related to Dutch gras, German Gras, also ultimately to green and grow.Extra examples I sowed a little bag of grass seed. I’ve walked along that path for so many years I know every blade of grass. The dog came running through the long grass. There were only a few clumps of coarse grass for the animals to eat. They all set off across the grass. We parked on the grass verge by the side of the road. You’re not allowed to walk on the grass. He stopped the car on the grass verge of the deserted road. Keep off the grass. We all sat down on the grass.Idioms
    the grass is (always) greener on the other side (of the fence)
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    (saying) said about people who never seem happy with what they have and always think that other people have a better situation than they have
    kick something into the long grass/into touch
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    (British English) to reject, remove or stop dealing with a problem He tends to deal with disputes by kicking them into the long grass.
    not let the grass grow under your feet
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    to not delay in getting things done
    put somebody out to grass
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    (informal) to force somebody to stop doing their job, especially because they are old
    (disapproving) a person who pretends to be your friend but who cannot be trusted
See the Oxford Advanced American Dictionary entry: grass