|Noah Webster's Dictionary|
(a.) Lowest; as, the nethermost abyss.
Nethermost (3 Occurrences)
1 Kings 6:6 The nethermost story was five cubits broad, and the middle was six cubits broad, and the third was seven cubits broad; for on the outside he made offsets in the wall of the house all around, that the beams should not have hold in the walls of the house. (WEB KJV JPS ASV WBS)
Psalms 55:23 But thou, O God, wilt bring them down into the pit of destruction: Bloodthirsty and deceitful men shall not live out half their days; But I will trust in thee. (See JPS)
Psalms 63:9 But those that seek my soul, to destroy it, Shall go into the lower parts of the earth. (See JPS)