IPA: /ˈkɒlɪə/
KK: /ˈkɑːljər/
A person who works in a coal mine or a ship that carries coal.
The collier worked long hours underground to extract coal for the power plant.
Collier is derived from the Old French word *colier*, meaning a person who works with coal or a coal miner. The term is related to the word *coal*, which comes from the Old English *calu*, meaning charcoal or coal. Thus, a collier is someone associated with coal mining or the coal industry.
Think of a 'collier' as a person who works with 'coal' — the Old French *colier* directly connects to coal mining.