IPA: /ˈkoʊlˌpɪt/
KK: /ˈkoʊlˌpɪt/
A deep hole in the ground where coal is extracted or mined.
The workers descended into the coalpit to begin their shift.
Coalpit → The word is formed from "coal" (from Old English *calu*, meaning a black mineral used as fuel) and "pit" (from Old English *pytt*, meaning a hole or excavation). A coalpit refers to a pit or excavation where coal is mined or extracted.
Think of a 'hole' ('pit') where 'coal' is dug out — that's what a coalpit is.