Definitionen
1.NounHell; the bottomless pit; primeval chaos; a confined subterranean ocean. .mw-parser-output .defdate{font-size:smaller}
2.NounA bottomless or unfathomed depth, gulf, or chasm; hence, any deep, immeasurable; any void space.
3.NounAnything infinite, immeasurable, or profound.
4.NounMoral depravity; vast intellectual or moral depth."They fell into the abyss of drug addiction."
5.NounAn impending catastrophic happening.
6.NounThe center of an escutcheon; fess point.
7.NounThe abyssal zone.
8.NounA difference, especially a large difference, between groups.