Ezekiel 40:16

And there were narrow windows to the little chambers, and to their posts within the gate round about, and likewise to the arches: and windows were round about inward: and upon each post were palm trees.

There were narrow windows - latticed windows (Henderson). The ancients had no glass, so they had them latticed-narrow in the interior of the walls, and widening at the exterior. Kimchi makes them to have been narrow without-literally, shut [from 'aaTam (H331), to shut.] Or else 'ªTumowt (H331) means 'made fast,' or 'firmly fixed in the chambers' (Maurer).

Likewise to the arches - rather, 'porches.'