Goafs

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Goaf \Goaf\; n.; pl. {Goafs}or {Goaves}. [Cf. 1st {Gob}.]
     (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} .
     [1913 Webster]


  
     {To work the goaf} or {To work the gob}, to remove the
        pillars of mineral matter previously left to support the
        roof, and replace them with props. --Ure.
        [1913 Webster]