bottomless pit

plural bottomless pits

1. literallyA pit with no visible bottom and apparently infinite depth.

   Synonyms: abyss

2. biblicalHell.

   1769, The Bible, King James Version, Oxford Standard Text, Revelation, 9:11, And they had a king over them, which is the angel of the bottomless pit, whose name in the Hebrew tongue is Abaddon, but in the Greek tongue hath his name Apollyon.

3. figurativelyAn endless resource or supply.

   Lipsius was replaced at Leyden by Joseph Justus Scaliger (1540-1609), the French Protestant scholar who was known to contemporaries as "the bottomless pit of erudition."

   1994, Donald Frederick Lach, Asia in the Making of Europe

4. figurativelyA person with an apparently boundless appetite; an entity or problem which consumes seemingly endless resources.

   2006: The Club For Growth: Bottomless Pit (blog entry), Phillip Rodokanakis In other words, we will continue throwing good money after bad, trying to feed a bottomless pit's insatiable appetite for taxpayer dollars.

   Synonyms: black hole

5. video gamesAn in-game hazard made up of a deep hole or void with no visible bottom, falling into which typically costs the player a life.

   Synonyms: death pit