underhung

/AH1 N D ER0 HH AH1 NG/
adjective
  1. 1

    Hung or suspended from above

  2. 2

    Resting on a track at the bottom, instead of being suspended; said of a sliding door.

  3. 3

    Having the lower jaw projecting.

Source: https://en.wiktionary.org/wiki/underhung