Collecting together money from your pockets, bag, around the house or down the back of the settee. Usually collected together to buy some small item
like a pint of milk or a
loaf of sliced bread. Therefore all the pennies and small change in copper will have an inordinate value.
May be used as a slightly offensive word if you have a group of
people pooling all their money to buy a cheap bottle of wine between them or some similar object of desire.