Launder

(län'der), n. [Contracted from O. Eng. lavandre, from Fr. lavandier, f. lavandière, from Lat. lavare, Fr. laver, to wash; It. lavandajo, lavandaja, lavandara, Sp. lavandero, lavandera, Pr. lavandiera.]

1. A washerwoman.
2. (Mining.) A trough used by miners to receive the powdered ore from the box where it is beaten.