launder

noun

1. (obsolete)A washerwoman or washerman.
2. A trough used by miners to receive powdered ore from the box where it is beaten, or for carrying water to the stamps, or other apparatus for comminuting (sorting) the ore.
3. A trough or channel carrying water to the wheel of a watermill.
4. A gutter (for rainwater).

verb

1. To wash; to wash, and to smooth with a flatiron or mangle; to wash and iron.
2. (obsolete)To lave; to wet.

   “Oft did she heave her napkin to her eyne, / Which on it had conceited characters, / Laundering the silken figures in the brine”

3. To disguise the source of (ill-gotten wealth) by various means.
4. (transitive)To obtain a pointer to an object created in storage occupied by an existing object of the same type, even if it has const or reference members.