katabothron /kat-ə-bothˈron/ or katavothron /ka-tavˈo-thron/

An underground water channel

• sphaerites
• sphaerocobaltite
• sphaerocrystal
• sphaerocrystals
• sphaerosiderite
• sphagnicolous
• sphagnologies
• sphagnologist
• sphagnologists
• sphagnology
• sphagnous
• sphagnum
• sphagnums
• sphairistike
• sphairistikes
• sphalerite
• sphalerites
• sphear
• spheare
• sphendone
• sphendones
• sphene
• sphenes
• sphenic
• Sphenisciformes