cost an arm and a leg

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cost an arm and a leg

slang To cost lot of money. College tuitions cost an arm and leg nowadays. I'm sick of paying rent in this town because it costs an arm and a leg!
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cost an arm and a leg

If something costs an arm and a leg, it costs a lot of money. It cost us an arm and a leg to get here. But it has been worth every penny and more. Note: Verbs such as pay, charge and spend are sometimes used instead of cost. Many restaurants were charging an arm and a leg for poor quality food.
See also: and, arm, cost, leg