tufa /tooˈfə, tūˈfə/

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

• Circaean
• circar
• circars
• Circassian
• Circassian circle
• Circassians
• circassienne
• Circean
• circensial
• circensian
• circinate
• Circinus
• circiter
• circle
• circled
• circler
• circle-rider
• circle-riders
• circle-riding
• circlers
• circles
• circlet
• circlets
• circling
• circlings