cockloft

noun

1. A small attic or garret.

   “For if the lowest floors already burn, / Cocklofts and garrets soon will take the turn.”

   “All theſe gentlemen appeared at the hour appointed in Mr. Curll's dining-room, two excepted; one of whom was the gentleman in the cockloft, his landlady being out of the way, and the gradus ad parnaſſum taken down; the other happened to be too cloſely watched by the bailiffs.”

2. A horizontal void between a building's uppermost ceiling and its roof, with no habitable or accessible space.

   “Fires often spread through cocklofts.”