English slang.

Pin Money, extra household income, normally earned by the house wife in a part time cleaning or shop job, used to pay for extra's like holidays and special occasions.
Our pin money took us to Spain for two weeks last August.
by black flag May 31, 2004
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Pin-money originally means the allowance a woman receives from her husband to purchase pins and clothes. Later, the meaning extended to the small amount of expenditure that a woman sets aside for use.
She is doing a part-time job to earn pin-money.
by Yokofan January 14, 2012
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