cupro-nickel

n [U] alloy of copper and nickel used for making coins 铜镍合金（用以制造硬币）.

cumbersome, cumin, cummerbund, cumulative, cumulatively, cumulus, cuneiform, cunnilingus, cunning, cunningly, cunt, cup, cup final (usu 通常作 Cup Final), cup-tie, cupboard, cupful, Cupid, cupidity, cupola, cuppa, cur, curability, curable, curacao (also curacoa), curacy, curate, curative, curator, curb, curd, curdle, cure, cure sb. of, curfew, curio, curiosity, curious, curiously, curl, curler,