Definify.com
Webster 1913 Edition
Overfall
O′ver-fallˊ
,Noun.
1.
A cataract; a waterfall.
[Obs.]
2.
(Naut.)
A turbulent surface of water, caused by strong currents setting over submerged ridges; also, a dangerous submerged ridge or shoal.
Webster 1828 Edition
Overfall
O'VERFALL
,Noun.