souterrain /soo-te-rɛ̃ˈ or sooˈtə-rān/

1. An underground chamber
2. An earth-house

• undercarriages
• undercart
• undercarts
• undercast
• undercasts
• undercharge
• undercharged
• undercharges
• undercharging
• underclad
• underclass
• underclasses
• underclassman
• underclassmen
• underclay
• underclays
• under-clerk
• under-clerks
• under-clerkship
• under-clerkships
• undercliff
• undercliffs
• underclothe
• underclothed
• underclothes