black hole

• ⇰ Ńष्ण विवर
• ⇰ ब्लैक होल

• ⇰ A dungeon or dark cell in a prison; a military lock-up or guardroom; -- now commonly with allusion to the cell (the Black Hole) in a fort at Calcutta (called the Black Hole of Calcutta>), into which 146 English prisoners were thrust by the nabob Suraja Do
• ⇰ An astronomical object whose mass is so condensed that the gravitational force does not allow anything, even light, to escape from its outer limit (the <cref>event horizon</cref>). The existence of such objects was first proposed from theoretical conside
• ⇰ a place into which things may enter, but can never emerge.