Source : Webster's Revised Unabridged Dictionary (1913)

Acceptor \Ac*cept"or\ (#; 277), n. [L.]
   One who accepts; specifically (Law & Com.), one who accepts
   an order or a bill of exchange; a drawee after he has
   accepted.

Source : WordNet®

acceptor
     n 1: (chemistry) in the formation of a coordinate bond it is the
          compound to which electrons are donated
     2: the person (or institution) who accepts a check or draft and
        becomes responsible for paying the party named in the
        draft when it matures

Source : Free On-Line Dictionary of Computing

acceptor
     
        {Finite State Machine}