a large gallery, found especially in the uppermost stories of Elizabethan and Jacobean manor houses, used as a family room and as a promenade.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for long gallery
Historical Examples of long gallery
But more often his days were spent exclusively in the Long-Gallery.The History of Sir Richard Calmady