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

Nearby words

  1. flooding,
  2. floodlight,
  3. floodlight projector,
  4. floodplain,
  5. floodwater,
  6. flooey,
  7. floor,
  8. floor broker,
  9. floor exercise,
  10. floor furnace

Origin of floodway

First recorded in 1885–90; flood + way1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for floodway



A channel for an overflow of water caused by flooding.
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