on older motorcycles, a metal bar which stuckout on the side of the engine. When forcefully pushed down with the foot it caused the engine to move into position for starting. If the spark was on at the time that the bar was kicked down, the engine could start unexpectedly, causing the bar to come flyingback up, sometimes hitting and causing damage to the ankle from the force. —MelbourneCongress Approved Glossary (2.4.92)