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stoper

American  
[stoh-per] / ˈstoʊ pər /

noun

  1. a machine for drilling rock from below.

Etymology

Origin of stoper

First recorded in 1870–75; stope + -er 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.