Definify.com

Webster 1913 Edition

Adj.

(Zool.)

Having the lower incisor teeth projecting beyond the upper ones, as in the bulldog.

Moved by water passing beneath; – said of a water wheel, and opposed to overshot;

as, an

undershot

wheel

Adj.

Moved by water passing under the wheel; opposed to overshot; as an undershot mill or mill-wheel.

undershot

undershot ‎(not comparable)

(of a waterwheel) powered by water flowing from below
(zoology) Having the lower incisor teeth projecting beyond the upper ones, as in the bulldog.