Definition of: chassis

(shas′ē, chas′ē) noun plural chas·sis (shas′ēz, chas′-)
1. The frame and springs of a motor vehicle; also, all other mechanical parts of the car, including the wheels and motor.
2. Aeron. The landing gear of an aircraft; the wheels, floats, or other structures which support the main weight of an airplane.
3. In radio: a The metal framework to which the tubes and other components of a receiver, amplifier, etc., are attached. b The assembled framework and components.
4. In coast artillery, a movable railway for running the top carriage of a gun into and out of firing position. [<F châssis <chas. See CHASE².]