Rough material or refuse resulting from the working of minerals; a piece or quantity of this. Cf. row, n.2 2, fine, n.2 5b.

Mining. An old vein or working which has become exhausted or has been abandoned for a long time. Also: waste material left over from the working of a…

Small fragments resulting from industrial processes. The waste produced when extracting minerals from rock. Obsolete.

Tin-mining rubble.

The refuse or rubbish of a mine.

Waste material from a coal mine, esp. waste material used to fill an empty space from which coal has been extracted. Also in plural in same sense…

technical. Earth or refuse material thrown or brought up in excavating, mining, dredging, etc.

concrete. (See quot. 1860.)

(Chiefly U.S.) A pile or heap of refuse or other matter ‘dumped’ or thrown down. spec. A pile of ore, earth, etc., which accumulates during mining…

Waste material removed during mining, quarrying, or civil engineering operations; (North American) surface material overlying a placer deposit.

attributive and in other combinations, chiefly in sense 10, as spoil-earth, spoil-ground, spoil-heap, spoil tip, etc.; also, in sense 1, spoil-hunting…

a hill of solidified crushed quartz built up from the residue of gold-mining operations; (now also) such a hill composed of the overburden from…