grass on/up

phrasal verb
Updated on: 15 Nov 2017

Definition of grass on/up

British slang
: to tell the police about the criminal activity of (someone)
  • He refused to grass on his friends.
  • Someone grassed him up.

Word by Word Definitions

grass play
  1. : herbage suitable or used for grazing animals

  2. : any of a large family (Gramineae synonym Poaceae) of monocotyledonous mostly herbaceous plants with jointed stems, slender sheathing leaves, and flowers borne in spikelets of bracts

  3. : land (such as a lawn or a turf racetrack) covered with growing grass

  1. : to feed (livestock) on grass sometimes without grain or other concentrates

  2. : to cover with grass

  3. : to produce grass

up play
  1. : in or into a higher position or level

  2. : from beneath the ground or water to the surface

  3. : from below the horizon

  1. : risen above the horizon

  2. : standing

  3. : being out of bed

  1. used as a function word to indicate motion to or toward or situation at a higher point of

  2. : up into or in the

  3. : in a direction regarded as being toward or near the upper end or part of

  1. : one in a high or advantageous position

  2. : an upward slope

  3. : a period or state of prosperity or success

  1. : to rise from a lying or sitting position

  2. : to move upward : ascend

  3. used with and and another verb to indicate that the action of the following verb was either surprisingly or abruptly initiated


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