tufa /tooˈfə, tūˈfə/

1. Calc-sinter (often calcareous tufa)
2. Tuff or other porous rock (obsolete)

• swilling
• swillings
• swills
• swill-tub
• swill-tubs
• swim
• swim against the stream
• swim against the tide
• swim bladder
• swim bladders
• swimmable
• cloches
• clock
• clock card
• clock cards
• clocked
• clocker
• clockers
• clock-golf
• clock-golfs
• clock in
• clocking
• clockmaker
• clockmakers
• clock off