This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A coal miner.

n. A coal ship.

n. A person in the business or occupation of producing (digging or mining coal or making charcoal) or in its transporting or commerce.

n. A vessel carrying a bulk cargo of coal

n. A nickname used by the traveller community, referring to a non-traveller

n. One engaged in the business of digging mineral coal or making charcoal, or in transporting or dealing in coal.

n. A vessel employed in the coal trade.

n. A digger of coal; one who works in a coal-mine.

n. A coal-merchant or dealer in coal.

n. A coasting-vessel employed in the coal-trade.

n. The gaper, Mya truncata, a bivalve mollusk.

n. someone who works in a coal mine

"Then I called the collier, and Wulfhere questioned him, and soon was glad as I that I had met with him, saying that in an hour we should be in safety."

miner    mineworker   

collier's stomach    collier's lung   

colliery   

brique    sodger    lampe    cheveux    l'aigle    mutineers'    coasting    fourchette    contient    whaling