trass

[ tras ]

/ træs /

noun

a light-colored type of volcanic tuff used in making water-resistant cement and mortar.

Nearby words

Also called tar·ras [tuh-ras] /təˈræs/.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trass

Sometimes a proportion of common sand mortar instead of lime is mixed with the trass.
A Dictionary of Arts, Manufactures and Mines|Andrew Ure
Trass, tras, n. a volcanic earth used as a hydraulic cement.
Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements)|Various
It is evident that this will form a pozzuolanic cement if a suitable silicious material such as trass is added to the cement.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6|Various
But the Trass boy finished his remarks about destiny in a very short time.
Whilomville Stories|Stephen Crane

He wished that the Trass boy would talk forever about destiny.
Whilomville Stories|Stephen Crane

British Dictionary definitions for trass

trass

/ (træs) /

noun

a variety of the volcanic rock tuff, used to make a hydraulic cement

Word Origin for trass

from Dutch tras, tarasse, from Italian terrazza worthless earth; see terrace

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012