pocket money 
noun [mass noun] British
1A small amount of money given to a child by its parents, typically on a regular basis: he saved his pocket money to buy his mother a scarf...
- When I was but a young boy I saved up my pocket money to buy all my own decorations for my room, creating in essence my own personal grotto.
- It was at this stage that he became interested in astronomy and saved his pocket money to buy himself materials such as lens from which he could construct a telescope.
- The average weekly sum for pocket money from parents is now £1.87.
1.1A small amount of money suitable for minor expenses: he paid for my digs and gave me pocket money...
- As for asylum seekers on two thirds benefit, this sum is more pocket money than most can expect.
- At that time, admission to the museum cost 10 cents, but he has only had a tiny amount of pocket money to spend.
- But here are some full-time students who make the most of their spare time by earning pocket money to meet their sundry expenses.