n. 深渊, 深邃, 地狱

[ noun ]
a bottomless gulf or pit; any unfathomable (or apparently unfathomable) cavity or chasm or void extending below (often used figuratively)
<noun.object>

Abyss \A*byss"\, n. [L. abyssus a bottomless gulf, fr. Gr. ?
bottomless; 'a priv. + ? depth, bottom.]
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.
--Milton.

The throne is darkness, in the abyss of light.
--Dryden.

2. Infinite time; a vast intellectual or moral depth.

The abysses of metaphysical theology. --Macaulay.

In unfathomable abysses of disgrace. --Burke.

3. (Her.) The center of an escutcheon.

Note: This word, in its leading uses, is associated with the
cosmological notions of the Hebrews, having reference
to a supposed illimitable mass of waters from which our
earth sprung, and beneath whose profound depths the
wicked were punished. --Encyc. Brit.