Source : Webster's Revised Unabridged Dictionary (1913)

Cark \Cark\, v. t.
   To vex; to worry; to make by anxious care or worry. [R.]

         Nor can a man, independently . . . of God's blessing,
         care and cark himself one penny richer.  --South.

Cark \Cark\, n. [OE. cark, fr. a dialectic form of F. charge;
   cf. W. carc anxiety, care, Arm karg charge, burden. See
   {Charge}, and cf. {Cargo}.]
   A noxious or corroding care; solicitude; worry. [Archaic.]

         His heavy head, devoid of careful cark.  --Spenser.

         Fling cark and care aside.               --Motherwell.

         Freedom from the cares of money and the cark of
         fashion.                                 --R. D.
                                                  Blackmore.

Cark \Cark\, v. i.
   To be careful, anxious, solicitous, or troubles in mind; to
   worry or grieve. [R.] --Beau. & Fl.

Source : WordNet®

cark
     v : disturb in mind or make uneasy or cause to be worried or
         alarmed; "She was rather perturbed by the news that her
         father was seriously ill" [syn: {perturb}, {unhinge}, {disquiet},
          {trouble}, {distract}, {disorder}]