χαλκοῦς
From LSJ
English (LSJ)
ῆ, οῦν, Att. contr. from χάλκεος, q.v. II Subst. χαλκοῦς, ὁ, copper coin used at Athens, 1/8 of an obol, Ar.Ec.815, 818, D.42.22, Alex.15.2, Philem.64,74, Cerc.17.41, Plu.2.665b, etc.: in pl., money, PCair.Zen.519 (iii B. C.), etc.