underhung
 (a.)上顎突出的
 Un·der·hung a.
 1. Carp. Resting on a track at the bottom, instead of being suspended; -- said of a sliding door.
 2. Having the lower jaw projecting.
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 Un·der·slung Un·der·hung, a. Of an automobile body, suspended from the springs in such a manner that the frame of the chassis is below the axles, the object being to lower the center of gravity of the car.
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 underhung
      adj 1: supported from below especially resting on a track instead
             of suspended from above; "underhung sliding doors"
      2: having a lower part projecting beyond the upper; "an
         underhung jaw"; "undershot bulldog" [syn: undershot, underslung]