credit union
US /ˈkred.ɪt ˌjuː.njən/
UK /ˈkred.ɪt ˌjuː.njən/

1.
a nonprofit-making money cooperative whose members can borrow from pooled deposits at low interest rates.
:
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I opened a savings account at the local credit union.
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Many people prefer credit unions over traditional banks for their lower fees.