5. the pits, Slang. an extremely unpleasant or depressing place, condition, etc. 6. a hollow or indentation in a surface. 7. a natural hollow or depression in the body: the pit of the back; hit in the pit of his stomach. 8. pockmark. 9. an enclosure for staging fights, esp. between dogs or cocks. 10. a place where slam dances are performed.