Pit Meaning

(gaming) Part of a casino which typically holds tables for blackjack, craps, roulette, and other games.

Example: A hole in the ground.
A mine.
  His circus job was the pits, but at least he was in show business.‎
The bottom part of.
  I felt pain in the pit of my stomach.‎
2013 July 20, “Welcome to the plastisphere”, The Economist, volume 408, number 8845:
  [The researchers] noticed many of their pieces of [plastic marine] debris sported surface pits around two microns across. Such pits are about the size of a bacterial cell. Closer examination showed that some of these pits did, indeed, contain bacteria, […].
The indented mark left by a pustule, as in smallpox.
The grave, or underworld.
Milton
  Back to the infernal pit I drag thee chained.
Bible, Job xxxiii. 18
  He keepeth back his soul from the pit.
An enclosed area into which gamecocks, dogs, and other animals are brought to fight, or where dogs are trained to kill rats.
John Locke
  as fiercely as two gamecocks in the pit
Formerly, that part of a theatre, on the floor of the house, below the level of the stage and behind the orchestra; now, in England, commonly the part behind the stalls; in the United States, the parquet; also, the occupants of such a part of a theatre.