Slough
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
An arm of a river, flowing between islands and the main-land, and separating the islands from one another. Sloughs have not the breadth of the main river, nor does the main body of water of the stream flow through them.
Dnnlleth & D. Bridge Co. v. Dubuque Co.unty, 55 Iowa, 565, 8 N. W. 443.