Meaning of "keep (someone/something) off something" in Essential American English Dictionary

keep (someone/something) off something

phrasal verb with keep us /kip/ verb (past tense and past participle kept)

B1 to not go onto an area, or to stop someone or something from going onto an area:

Keep off the grass.

(Definition of “keep (someone/something) off something” from the Webster's Essential Mini Dictionary © Cambridge University Press)