I. ˈlȯn-dər, ˈlän- verb
( laun·dered ; laun·der·ing -d(ə-)riŋ)
Etymology: Middle English launder, noun
Date: 1664
transitive verb
1. : to wash (as clothes) in water
2. : to make ready for use by washing and ironing
a freshly launder ed shirt
3. : to transfer (as illegally obtained money or investments) through an outside party to conceal the true source
4. : sanitize 2
launder ed language
intransitive verb
: to wash or wash and iron clothing or household linens
• laun·der·er -dər-ər noun
II. noun
Etymology: Middle English, launderer, from Anglo-French lavandere, from Medieval Latin lavandarius, from Latin lavandus, gerundive of lavare to wash — more at lye
Date: 1667
: trough ; especially : a box conduit conveying particulate material suspended in water in ore dressing