flap door

American  

noun

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.

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Etymology

Origin of flap door

First recorded in 1835–45

Example Sentences

It was covered with a canopy, and Lawler sat beside a flap door.

From Seattle Times • Jan. 9, 2020

In front of each tier of 12 compartments is a flap door opening downward.

From Handwork in Wood by Noyes, William

The tent is surmounted by a large gilt star, and over the flap door is a white marble crucifix.

From The Romance of Isabel Lady Burton Volume II by Wilkins, W. H.