GNU Collaborative International Dictionary of English

Found 2 definitions

1.       
   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
   
         
       

2.       
   Gove , n. [Also goaf, goof, goff.] A mow; a rick for hay. [Obs.]
   Tusser.
   
   1913 Webster