washshed

From wash +‎ shed.

washshed (plural washsheds)

1. A shed used for washing.
   • 2003, Rose M. Nolen, Hoecakes, Hambone, and All That Jazz, page 14:

     They put the clothes and household linens into heavy iron pots over fires, either outdoors or in washsheds. After soaking the wash in boiling water with soap they had made, the women scrubbed the clothing or laid it out on a board […]