From Longman Dictionary of Contemporary Englishspending moneyˈspending ˌmoney noun [uncountable] SPEND MONEYmoney that you have available to spend on the things you want rather than need
Examples from the Corpus
spending money• It will be Christmas spending money.• My parents give me $10 a week for spending money.• It should not consist merely of spending money, in terms of the framework established earlier.From Longman Business Dictionaryspending moneyˈspending ˌmoney money that you have available to spend on small personal expensesThe winner will receive a holiday for two in Thailand, plus £1000 spending money. → money 