Its Gravity Is So Strong Even Light Cannot Escape
This page is the CodyCross answer for the clue below from Tracking Time, Group 1054, Puzzle 5 (Days of the Week).
Question is: Its Gravity Is So Strong Even Light Cannot Escape
and the answer is: BLACKHOLE
Word Meaning:
BLACK HOLE — A place of punitive confinement; a lockup or cell; a military guardroom.
Definitions from Wiktionary.