gob
NounWordNet 3.0
Webster's Dictionary (GCIDE)
Gob \Gob\, n. [OF. gob morsel; cf. F. gobe, gobbe, a poisoned morsel, poison ball, gobet a piece swallowed, gober to swallow greedily and without tasting; cf. Gael. & Ir. gob mouth, snout, W. gwp a bird's head and neck. Cf. Gobble, Job, n.]
1.A little mass or collection; a small quantity; a mouthful. [Low] --L'Estrange. [1913 Webster]
2.The mouth. [Prov. Eng.or Low] --Wright. [1913 Webster]
Goaf \Goaf\; n.; pl. Goafsor 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]