1. A white to grey volcanic tufa, formed of decomposed trachytic cinders; - sometimes used as a cement. Hence, a coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water

Derived forms: trasses

Encyclopedia: Trass

• cattle farm
• cattle grid
• cattle guard
• cattle pen
• cattle plague
• cattle ranch
• cattle thief
• cattle trail
• cattleman
• cattleship
• cattley guava
• cattleya
• Cattleya citrina
• catty
• catty-corner
• catty-cornered
• Catullus
• catwalk
• Caucasia
• Caucasian
• Caucasian language
• Caucasian race
• Caucasian walnut
• Caucasic
• Caucasoid