trass Hear it!

trass definition

trass (tras)

noun

a volcanic rock, powdered and used in making a hydraulic cement

Etymology: Ger < Du tras < earlier terras < MFr terrace: see terrace

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.