outhouse (n.)

• basement
• bathroom
• booth
• can
• closet
• convenience
• crapper
• crib
• gatehouse
• head
• hut
• hutch
• jakes
• john
• johnny
• kiosk
• latrine
• lavatory
• lean-to
• necessary
• office
• outbuilding
• pavilion
• privy
• shack
• shanty
• shed
• stall
• toilet
• tollbooth
• tollhouse
• urinal
• washroom