Dutch door

WordReference Random House Unabridged Dictionary of American English © 2025

Dutch′ door′, 

1. Building, Architecture a door consisting of two units horizontally divided so that each half can be opened or closed separately.

• 1640–50

Collins Concise English Dictionary © HarperCollins Publishers::

Dutch door noun

1. a door with an upper and lower leaf that may be opened separately
   Also called (in Britain and certain other countries): stable door