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

An underground water channel

• toolboxes
• tooled
• tooled up
• tooler
• toolers
• toolhouse
• toolhouses
• tooling
• toolings
• toolkit
• toolkits
• toolmaker
• toolmakers
• toolmaking
• toolmakings
• toolman
• toolmen
• tool post
• tool posts
• toolpusher
• toolpushers
• toolroom
• toolrooms
• tools
• tool shed