—v.tr.
1 wash and iron (clothes, linen, etc.).
2 colloq. transfer (funds) to conceal a dubious or illegal origin.
—n. a channel for conveying liquids, esp. molten metal.
Derivatives:
launderer n.
Etymology: ME launder (n.) washer of linen, contr. of lavander f. OF lavandier ult. f. L lavanda things to be washed, neut. pl. gerundive of lavare wash
Useful english dictionary. 2012.