Holing definitions

Holing

1) Doing doughnut duty
Found on https://www.crosswordclues.com/clue/holing

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Holing

• (n.) Undercutting in a bed of coal, in order to bring down the upper mass.
Found on http://thinkexist.com/dictionary/meaning/holing/

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Holing

Hol'ing noun [ See Hole a hollow.] (Mining) Undercutting in a bed of coal, in order to bring down the upper mass. Raymond.
Found on http://www.encyclo.co.uk/webster/H/53

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