credit union

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A cooperative organization that makes loans to its members at low interest rates.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A financial cooperative similar to a bank but owned and controlled by its members, often restricted to a local area or sometimes to a single profession.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a cooperative depository financial institution whose members can obtain loans from their combined savings