underhung

Etymology
From.

Adjective

 * 1) Hung or suspended from above.
 * 2) Having the lower jaw projecting.
 * 3) Of a sliding door: resting on a track at the bottom, instead of being suspended.
 * 1) Of a sliding door: resting on a track at the bottom, instead of being suspended.
 * 1) Of a sliding door: resting on a track at the bottom, instead of being suspended.