tufa /tooˈfə, tūˈfə/

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

• heartseed
• heartseeds
• heart-service
• heart-services
• heart-shaped
• heart shell
• heartsick
• heartsickness
• heartsink
• heartsinks
• heartsome
• heart-sore
• heart-spoon
• heart-spoons
• heart-stirring
• heart-stricken
• heart-strike
• heart-strikes
• heart-striking
• heart-string
• heart-strings
• heart-strook
• heart-struck
• heart-throb
• heart-throbs