Source : Webster's Revised Unabridged Dictionary (1913)

Cash \Cash\, v. t. [imp. & p. p. {Cashed}; p. pr. & vb. n.
   {Casing}.]
   To pay, or to receive, cash for; to exchange for money; as,
   cash a note or an order.

Source : WordNet®

cashed
     adj : for which money has been paid; "a cashed check"