a water trough, esp. one used in mining for washing dirt from the ore
Origin:
ME, contr. < lavender, washerwoman < OFr lavandier < ML lavandarius < LL lavandaria, things to be washed < L lavandus, ger. of L lavare, to wash: see lave
transitive verb
to wash, or wash and iron (clothes, etc.)
to exchange or invest (money) in such a way as to conceal that it came from an illegal or improper source
to make (something improper or offensive) seem less so