Noah Webster's Dictionary (n.) A flood of water; an inundation.

Multi-Version Concordance Waterflood (2 Occurrences) Job 38:25 Who hath cleft a channel for the waterflood, Or the way for the lightning of the thunder; (See JPS ASV) Psalms 69:15 Let not the waterflood overflow me, neither let the deep swallow me up, and let not the pit shut her mouth upon me. (KJV JPS ASV)