launder

verb

• 1wash and iron (clothes or linen):he wasn’t used to laundering his own bed linen (as adjective, with submodifier laundered)freshly laundered sheets

• 2 informal conceal the origins of (money obtained illegally) by transfers involving foreign banks or legitimate businesses: $123,000 had been laundered through Geneva bank accounts
• alter (information) to make it appear more acceptable:we began to notice attempts to launder the data retrospectively

noun

• a trough for holding or conveying water, especially (in mining) one used for washing ore.
• a channel for conveying molten metal from a furnace or container to a ladle or mould.