The Collaborative International Dictionary of English v.0.48:

Budget \Budg"et\, n. [OE. bogett, bouget, F. bougette bag,
   wallet, dim. of OF. boge, bouge, leather bag. See Budge,
   n., and cf. Bouget.]
   1. A bag or sack with its contents; hence, a stock or store;
      an accumulation; as, a budget of inventions.
      [1913 Webster]

   2. The annual financial statement which the British
      chancellor of the exchequer makes in the House of Commons.
      It comprehends a general view of the finances of the
      country, with the proposed plan of taxation for the
      ensuing year. The term is sometimes applied to a similar
      statement in other countries.
      [1913 Webster]

   To open the budget, to lay before a legislative body the
      financial estimates and plans of the executive government.
      [1913 Webster]