A traversing base frame, or movable railway, along which the carriage of a barbette or casemate gun moves backward and forward. [See Gun carriage.]
- The rectangular, usually steel frame, supported on springs and attached to the axles, that holds the body and motor of an automotive vehicle.
- The landing gear of an aircraft, including the wheels, skids, floats, and other structures that support the aircraft on land or water.
- The frame on which a gun carriage moves forward and backward.
- The framework to which the components of a radio, television, or other electronic equipment are attached.