Meaning of TRASS in English

TRASS

( n. )

A white to gray 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.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.