abysm (orig. form ‘abime’; rhymes with ‘time’ as late as 1616)
1.
bottomless
pit Ant. III. xi. [xiii.] 147 “abysm of hell.”
2.
profound chasm or
gulf (fig.)
Tp. I. ii. 50
“abysm of time,”
Sonn. cxii. 9.
