What is the meaning of Credit bureau?

Credit bureau is a company that collects and sells information about how people handle credit. It issues credit reports that list how individuals manage their debts and make payments, how much untapped credit they have available and whether they have applied for any loans. The reports are made available to individuals and to creditors who profess to have a legitimate need for the information. The three major national credit bureaus are Equifax, Experian (formerly TRW) and TransUnion. Often called credit reporting agency.