'To open the budget' definitions:

Definition of 'To open the budget'

From: GCIDE

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]