grass on/up

phrasal verb

grassed on/up; grassing on/up; grasses 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.

Dictionary Entries Near grass on/up

Cite this Entry

“Grass on/up.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/grass%20on%2Fup. Accessed 30 May. 2024.

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