the process of gathering money, often owed on a debt, or a certain amount of money that has been gathered
The collection of the company's debt was a difficult process.
presenting a negotiable instrument, eg a cheque or draft, for payment, or converting accounts receivable into cash
The draft is sent for collection, known as a documentary collection.
a group of objects such as works of art or pieces of writing brought together in one place
He was a violent criminal who nonetheless had a big gun collection.