For A-arm we have terms and definitions in 2 topics. The topics are Import Cars and Offroading.

A triangle-shaped suspension control-arm device, with two points connected to the chassis and one to the wheel spindle. Control arms are sometimes called A-arms because from the top view, they are shaped like the letter A. Also referred to as A-frame.
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(noun) a moving suspension component that connects the spindle to the chassis.
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