καταρράκτης 1 καταρρήγνυμι καταράσσω
I.as adj. down-rushing, τὸν καταρράκτην ὀδόν (attic for οὐδόν) to the downward entrance [of Hades], Soph.
II.as Subst. broken water, a waterfall, Lat. cataracta, Strab.
2.a kind of portcullis, Plut.
3.a sea-bird, so called from rushing down upon its prey, a gull, Ar.