Launder
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A trough used by miners to receive the powdered ore from thebox where it is beaten, or for carrying water to the stamps, or otherapparatus, for comminuting, or sorting, the ore.
Launder meaning & definition 1 of Launder.
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To conceal the source of money as by channeling it through an intermediary.
Launder meaning & definition 2 of Launder.