Answer: KEEPOUT

AnswerCrossword Clue
KEEPOUT"No trespassing"
KEEPOUTStop sign?
KEEPOUTWarning sign
KEEPOUTProperty border warning
KEEPOUTPredecessor of "This Means You"
KEEPOUTUnwelcome sign?
KEEPOUTUnwelcome greeting?
KEEPOUTPrevent from entering
KEEPOUTUnwelcome sign