/ ˈkɒliə(r); NAmE ˈkɑːl-/ noun
1.
( old-fashioned , especially BrE ) = coal miner
2.
a ship that carries coal
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WORD ORIGIN
Middle English : from coal + -ier . The original sense was maker of charcoal , who usually brought it to market, hence person selling charcoal , later person selling coal , which gave rise to the current senses.