A buoyancy board made of foam, used to support the body when in water.
A trough or channel carrying water to the wheel of a watermill.
A gutter (for rainwater).
A trough used by miners to receive powdered ore from the box where it is beaten, or for carrying water to the stamps, or other apparatus for comminuting (sorting) the ore.
To disguise the source of (ill-gotten wealth) by various means.
To wash; to wash, and to smooth with a flatiron or mangle; to wash and iron.