Abyss

A·byss

Abyss

n.
  1. A bottomless or unfathomed depth, gulf, or chasm; hence, any deep, immeasurable, and, specifically, hell, or the bottomless pit.
    Ye powers and spirits of this nethermost abyss.
    The throne is darkness, in the abyss of light.
  2. Infinite time; a vast intellectual or moral depth.
    The abysses of metaphysical theology.
    In unfathomable abysses of disgrace.
  3. The center of an escutcheon. (Her.)