Pronunciation: (bilt'in"),[key] —adj. 1. built so as to be an integral and permanent part of a larger construction: The wall has a built-in bookcase. 2. existing as a natural or characteristic part of something; inherent: a built-in contempt for daydreaming.
—n. 1. a built-in piece of furniture or appliance.
2. an additional feature or capability, as of a machine or a service: a car with power steering, power brakes, and other built-ins.