Related Clues:

• Message on a restroom door, perhaps
• Got justly
• Opposite of vacancy, on some signs
• Working class?
• Like most runs
• Locked lavatory stall sign
• Like lovebirds
• Locked, as a lavatory
• Type of leave
• Not without sacrifice
• Occupied (5)
• Already occupied
• Remitted
• Took care of a bill
• Like animals in a zoo