noun
national treasury
Refers to the financial resources of the national government, often used in contexts of public spending, tax revenue, or government funds.
その事業は国庫の負担で行われた。
The project was carried out at the expense of the national treasury.
国庫からの補助金が削減された。
Subsidies from the national treasury were cut.
Compound of 国 (country, nation) and 庫 (warehouse, storehouse), literally 'national storehouse'. The reading こっこ is a regular sound change from こくこ.