Definitions

from The Century Dictionary.

  • noun A stack or cock, as of grain.
  • noun A rick of corn in the straw laid up in a barn.
  • noun 3. In coal-mining, a space from which coal has been worked away, and which is more or less filled up with refuse.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Mining) That part of a mine from which the mineral has been partially or wholly removed; the waste left in old workings; -- called also gob .
  • noun to remove the pillars of mineral matter previously left to support the roof, and replace them with props.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mining That part of a mine from which the mineral has been partially or wholly removed; the waste left in old workings.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Compare gob.

Examples

  • But experts said that the preferred theory was that a collapse of the mine's roof in the "goaf" - the void left behind after coal is removed - released methane into the mine.

    BBC News - Home

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