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groutlock brick

American

[grout-lok] / ˈgraʊtˌlɒk /

noun

a brick chamfered on its inner angles to allow space for vertical and horizontal reinforcing rods sealed in grout.

Etymology

Origin of groutlock brick

grout + lock ¹

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.