holing

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English[edit]

Etymology 1[edit]

Verb[edit]

holing

  1. present participle of hole

Etymology 2[edit]

hole(a hollow) +‎ -ing

Noun[edit]

holing ‎(plural holings)

  1. (mining) undercutting in a bed of coal in order to bring down the upper mass
    (Can we find and add a quotation of Raymond to this entry?)