'Narrowed' in the Bible

The nethermost chamber was five cubits broad, and the middle was six cubits broad, and the third was seven cubits broad: for without in the wall of the house he made narrowed rests round about, that the beams should not be fastened in the walls of the house.

And the upper chambers narrowed, for [the] galleries took away [space] from them more than [they took] from the lower [levels] and more than [they took] from the middle [level] [in the] building.