Webster’s Revised Unabridged Dictionary · 1913
Slough
Slough (slou), a. Slow. [Obs.] Chaucer.
Slough (slou), n. [OE. slogh, slough, AS. slōh a hollow place; cf. MHG. slūch an abyss, gullet, G. schlucken to swallow; also Gael. & Ir. sloc a pit, pool. ditch, Ir. slug to swallow. Gr. λύζειν to hiccough, to sob.] 1. A place of deep mud or mire; a hole full of mire. Chaucer.
He's here stuck in a slough. Milton.
2. [Pronounced slo͞o.] A wet place; a swale; a side channel or inlet from a river. [In this sense local or provincial; also spelt sloo, and slue.]
Slough grass (Bot.), a name in the Mississippi valley for grasses of the genus Muhlenbergia; — called also drop seed, and nimble Will.
Slough, obs. imp. of Slee, to slay. Slew. Chaucer.
Slough (slŭf), n. [OE. slugh, slouh; cf. MHG. slūch the skin of a serpent, G. schlauch a skin, a leather bag or bottle.] 1. The skin, commonly the cast-off skin, of a serpent or of some similar animal.
2. (Med.) The dead mass separating from a foul sore; the dead part which separates from the living tissue in mortification.
Slough, v. i. [imp. & p. p. Sloughed; p. pr. & vb. n. Sloughing.] (Med.) 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.
Slough, v. t. To cast off; to discard as refuse.
New tint the plumage of the birds, And slough decay from grazing herds. Emerson.