redeem in WordNet English dictionary

1. save from sins
   deliver  redeem  save 
   
2. pay off (loans or promissory notes)
   redeem  pay off 
   
3. exchange or buy back for money; under threat
   ransom  redeem 
   
4. convert into cash; of commercial papers
   redeem 
   
5. to turn in (vouchers or coupons) and receive something in exchange
   redeem 
   
6. restore the honor or worth of
   redeem