ADJ. deep, shallow | bottomless | black, dark | chalk, gravel a disused gravel pit
VERB + PIT dig
2 coal mine
ADJ. open They extract the mineral from open pits and underground mines.
VERB + PIT go down He went down the pit at the age of fifteen.
PIT + NOUN village There's no more work in these pit villages. | closure
PREP. in a/the ~ Most boys in the village worked in the pits.