The dictionary would be a good place to start
budg⋅et
/ˈbʌdʒɪt/ Show Spelled Pronunciation [buhj-it] Show IPA noun, adjective, verb, -et⋅ed, -et⋅ing.
–noun
1. an estimate, often itemized, of expected income and expense for a given period in the future.
2. a plan of operations based on such an estimate.
3. an itemized allotment of funds, time, etc., for a given period.
4. the total sum of money set aside or needed for a purpose: the construction budget.
5. a limited stock or supply of something: his budget of goodwill.
6. Obsolete. a small bag; pouch.