flap door

  1. Also called falling door. a door hinged at the bottom so as to fall downward and outward.

  2. a door placed horizontally or on a shallow incline, as an exterior cellar door.

Origin of flap door

First recorded in 1835–45

Words Nearby flap door

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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