資料來源 : Webster's Revised Unabridged Dictionary (1913)

Gobbing \Gob"bing\, n. [See lst {Gob}.] (Mining)
   (a) The refuse thrown back into the excavation after removing
       the coal. It is called also {gob stuff}. --Brande & C.
   (b) The process of packing with waste rock; stowing.