tufa /tooˈfə, tūˈfə/

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

• rainforest
• rainforests
• rain gauge
• rain gauges
• rainier
• rainiest
• rain in
• raininess
• raininesses
• raining
• rainless
• rainmaker
• rainmakers
• rainmaking
• rainmakings
• rain-plover
• rain-plovers
• rain-print
• rain-prints
• rainproof
• rainproofed
• rainproofing
• rainproofs
• rains
• rain shadow