pin money

Từ điển Việt Anh Việt 4in1 - English Vietnamese 4 in 1 Dictionary

ˈpin ˌmoney BrE AmE noun [uncountable]
British English a small amount of extra money which someone earns to spend on things which they want but do not really need:
She helped her uncle out sometimes just to earn a bit of pin money.

pin+moneyhu

◎	[pin money]
〆	saying & slang
	■	extra money, money to spend on candy etc.
		☆	Janet used to earn pin money by painting signs.