D defs.my
Entry 2 senses Webster, 1913

Overfall

· O·ver·fall · IPA /ˈoʊvɚfɔl/
01 n. A cataract; a waterfall.
  1. 1.
    A cataract; a waterfall.[Obs.]
  2. 2.
    A turbulent surface of water, caused by strong currents setting over submerged ridges; also, a dangerous submerged ridge or shoal.(Naut.)