Underhung Definition

ŭndər-hŭng
adjective
Supported from above, as a crane that moves along a track supported from a beam.
American Heritage
Webster's New World
Wiktionary
(carpentry) Resting on a track at the bottom, instead of being suspended; said of a sliding door.
Forney.
Wiktionary

Having the lower jaw projecting.

T. Hughes.
Wiktionary
Synonyms: