underhung

1. Having the lower jaw or teeth projecting beyond the upper; underhung. Study of move trace of mandible from edentulous position to the largest open mouth position
   下门牙或下颌突出的下颌或牙突出超过上颌或牙的；下颚突出的无牙颌位至最大开口位下颌运动规律的初步探讨

adj

1. having a lower part projecting beyond the upper
   1. an underhung jaw
   2. undershot bulldog

   Synonym:    undershotunderslung

2. supported from below especially resting on a track instead of suspended from above
   1. underhung sliding doors