laun‧der /ˈlɔːndə $ ˈlɒːndər/ verb [transitive]
[Date: 1500-1600; Origin: launder 'someone who washes clothes' (14-17 centuries), from French lavandier, from Latin lavare; ⇒ lavatory]

1. to put money which has been obtained illegally into legal businesses and bank accounts, so that you can hide it or use it:
He was jailed for laundering drug money.

2. formal to wash and iron clothes, sheets etc

[TahlilGaran] Dictionary of Contemporary English ▲