Abyss

• a bottomless gulf or pit; any unfathomable (or apparently unfathomable) cavity or chasm or void extending below (often used figuratively)
• Abyss is a fictional chracter in the Marvel UK comics universe, a supervillain who has recently faced Nova and other Marvel cosmic entities.
• Within the mystical system of Thelema, the Abyss is the great gulf or void between the phenomenal world of manifestation and its noumenal source.
• A bottomless or unfathomed depth, gulf, or chasm; hence, any deep, immeasurable, and, specifically, hell, or the bottomless pit; Infinite time; a vast intellectual or moral depth; The center of an escutcheon
• The center of an escutcheon. For example, to bear a fleur-de-lis in abyss is to have it placed in the middle of the shield free from any other bearing.
• Means "bottomless pit." In the New Testament, the sea symbolized chaos, evil, and evil beings.
• Strictly speaking, the abyss is a particular zone extending between 3000 and 6000 m depth.