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floss hole

American  

noun

Metallurgy.

  1. a hole in a puddling furnace for the removal of ash or slag.

Etymology

Origin of floss hole

1830–40; floss slag < German Flosz in same sense

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.