mattamore /ma-tə-mōrˈ, -mörˈ or matˈə-/

A subterranean chamber

• tank car
• tank cars
• tanked
• tanked up
• tank engine
• tank engines
• tanker
• tankered
• tankering
• tankers
• tank farm
• tank-farmer
• tank-farmers
• tank-farming
• tank farms
• tankful
• tankfuls
• tank furnace
• tank furnaces
• tankia
• tankies
• tanking
• tankings
• tankini
• tankinis