- a pair of casement windows extending to the floor and serving as portals, especially from a room to an outside porch or terrace.
Origin of French window
First recorded in 1795–1805
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- (sometimes singular) British a pair of casement windows extending to floor level and opening onto a balcony, garden, etcUS and Canadian name: French doors