"Slough" is a word in LAW AND LEGAL, ENGLISH

An arm of a river, flowing be-tween islands and the main-land, and sep-arating 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. Dunlieth & D. Bridge Co. v. Dubuque County, 55 lowa, 565, 8 N. W. 443

The skin, commonly the cast-off skin, of a serpent or of
some similar animal.

The dead mass separating from a foul sore; the dead part
which separates from the living tissue in mortification.

A wet place; a swale; a side channel or inlet from a river.

To form a slough; to separate in the form of dead matter
from the living tissues; -- often used with off, or away; as, a
sloughing ulcer; the dead tissues slough off slowly.

To cast off; to discard as refuse.

imp. of Slee, to slay. Slew.

Slow.

A place of deep mud or mire; a hole full of mire.