noun Someone who mines or sells coal for a living.
- The collier came up from the mine with a face black from coal dust.
- Every winter, the local collier delivered sacks of coal to the houses along our street.
- His grandfather worked as a collier in the Welsh valleys for forty years.
noun A ship built to carry coal as cargo.
- A rusty collier sat at the dock while workers unloaded its heavy black cargo.
- Sailors on the collier complained that the coal dust got into everything on board.
- The old collier ran aground off the coast while hauling coal to the capital.
- By 1830, more than two million tons of coal a year, principally from the North East, arrived in London by coastal collier, and that figure reached three million tons by the 1840s.
— Nigel Harris, St Pancras and King's Cross: 1947 (2021)