The Collaborative International Dictionary of English v.0.48:

Saving \Sav"ing\, n.
   1. Something kept from being expended or lost; that which is
      saved or laid up; as, the savings of years of economy.
      [1913 Webster]

   2. Exception; reservation.
      [1913 Webster]

            Contend not with those that are too strong for us,
            but still with a saving to honesty.   --L'Estrange.
      [1913 Webster]

   Savings bank, a bank in which savings or earnings are
      deposited and put at interest.
      [1913 Webster]

WordNet (r) 3.0 (2006):

savings bank
    n 1: a thrift institution in the northeastern United States;
         since deregulation in the 1980s they offer services
         competitive with many commercial banks
    2: a container (usually with a slot in the top) for keeping
       money at home; "the coin bank was empty" [syn: savings
       bank, coin bank, money box, bank]