Answer: keepout

AnswerCrossword Clue
KEEPOUT

"No trespassing"

KEEPOUT

Stop sign?

KEEPOUT

Warning sign

KEEPOUT
Property border warning
KEEPOUT
Predecessor of "This Means You"
KEEPOUTUnwelcome sign?
KEEPOUTUnwelcome greeting?
KEEPOUTPrevent from entering
KEEPOUTUnwelcome sign