black hole

Meanings

1. 1
   noun A place of punitive confinement; a lockup or cell; a military guardroom.
2. 2
   noun A gravitationally domineering celestial body with an event horizon from which even light cannot escape; the most dense material in the universe, condensed into a singularity, usually formed by a collapsing massive star.
3. 3
   noun A void into which things disappear, or from which nothing emerges; an impenetrable area or subject; an area impervious to communication.
4. 4
   noun A place where incoming traffic is silently discarded.
5. 5
   noun A bit bucket; a place of permanent oblivion for data.
6. 6
   verb To redirect (network traffic, etc.) nowhere; to discard (incoming traffic).