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See more synonyms for drawhole on Thesaurus.com
noun Mining.
  1. a funnel-shaped vertical opening cut at the bottom of a stope, which permits the loading of ore into conveyances in the passageways below.
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Origin of drawhole

Also called glory hole, mill hole.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018