Related Clues:

• Away from home
• Unavailable
• Already taken
• ''Ocupado''
• Out for lunch, say
• Message on a restroom door, perhaps
• Opposite of vacancy, on some signs
• At lunch, say
• Locked lavatory stall sign
• Locked, as a lavatory
• Occupied (5)
• Already occupied
• '-- a million years!'
• Not vacant, as a restroom
• Away at the moment