bottom out

Verb

 * 1)  To reach the bottom; to reach the nadir or lowest point.
 * 2)  To touch or drag along the ground or other surface.
 * 3)  Of a vessel, to touch the bottom of a water body.
 * 4)  To strike the lower mechanical stop and lose the ability to buffer further downward motion.
 * 1)  To strike the lower mechanical stop and lose the ability to buffer further downward motion.