Mining. [varr. of SMEDDUM.] = SMITHAM 2. Also attrib.

1

1821.  W. Forster, Section of Strata (ed. 2), 341. The Ore, that collects at the bottom of the Tub, is called Smiddum.

2

1858.  Simmonds, Dict. Trade, Smiddum-tails, in mining, the sludge or slimy portion deposited in washing ore.

3

1894.  Heslop, Northumbld. Gloss., Smiddum, small particles of lead ore [etc.].

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