a mine car Alternative forms minecar Etymology From mine + car. Noun mine car (plural mine cars) (mining) A car that operates on rails laid in a mine, usually for carrying ore, coal, or waste. Hyponym: dinky (Appalachia) Coordinate terms: minecart (sometimes synonymous); mill car, quarry car Related terms ore carskip car Anagrams Crimean, carmine, Armenic, Carmine, ceriman, Mercian