slough
The skin shed by a snake or other reptile.
Dead skin on a sore or ulcer.
To shed (skin).
To slide off (like a layer of skin).
(card games) To discard.
(slang, Western US) To commit truancy, be absent from school without permission.
(British) A muddy or marshy area.
Those who are contented to remain with me will be occasionally exposed to the dulness inseparable from heavy roads, steep hills, sloughs, and other terrestrial retardations; but with tolerable horses and a civil driver (as the advertisements have it), I engage to get as soon as possible into a more picturesque and romantic country, if my passengers incline to have some patience with me during my first stages.
(Eastern US) A type of swamp or shallow lake system, typically formed as or by the backwater of a larger waterway, similar to a bayou with trees.
(Western US) A secondary channel of a river delta, usually flushed by the tide.
A state of depression.
(Canadian Prairies) A small pond, often alkaline, many but not all formed by glacial potholes.