Launder
Launder (lan"dẽr or lan"dẽr) , noun
[Contracted from Old English lavender, French lavandière, Late Latin lavandena, from Latin lavare to wash. See Lave.]
1.
A washerwoman. [Obsolete]
2.
(Mining) A trough used by miners to receive the powdered ore from the box where it is beaten, or for carrying water to the stamps, or other apparatus, for comminuting, or sorting, the ore.
Launder (lan"dẽrd or lan"dẽrd) , transitive verb
1.
To wash, as clothes; to wash, and to smooth with a flatiron or mangle; to wash and iron; as, to launder shirts.
2.
To lave; to wet. [Obsolete] — Shakespeare