[ fluhd-wey ]
/ ˈflʌdˌweɪ /


the channel and adjacent shore areas under water during a flood, especially as determined for a flood of a given height.

Origin of floodway

First recorded in 1885–90; flood + way1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for floodway

[ flŭdwā′ ]

A channel for an overflow of water caused by flooding.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.