Source : Webster's Revised Unabridged Dictionary (1913)

Wizen \Wiz"en\, a.
   Wizened; thin; weazen; withered.

         A little lonely, wizen, strangely clad boy. --Dickens.

Wizen \Wiz"en\, n.
   The weasand. [Prov. Eng. & Scot.]

Wizen \Wiz"en\, v. i. [OE. wisenen, AS. wisnian akin to weornian
   to decay, OHG. wesan?n to grow dry, G. verwesen to rot, Icel.
   visna to wither, Sw. vissna, Dan. visne, and probably to L.
   virus an offensive odor, poison. Cf. {Virus}.]
   To wither; to dry. [Prov. Eng. & Scot.]

Source : WordNet®

wizen
     adj : lean and wrinkled by shrinkage as from age or illness; "the
           old woman's shriveled skin"; "he looked shriveled and
           ill"; "a shrunken old man"; "a lanky scarecrow of a man
           with withered face and lantern jaws"-W.F.Starkie; "he
           did well despite his withered arm"; "a wizened little
           man with frizzy gray hair" [syn: {shriveled}, {shrivelled},
            {shrunken}, {withered}, {wizened}]