Carchedonius, Gemma. Plin. A stone, in the house appearing of purple colour, in the ayre sierie.Carchesium.Virg.The vpper part of the maste, wherein the cordes or shrouds are fastened. A standing cup with handles. Carchesium. Catul.
Lewis and Short: Latin dictionary
Carchēdŏnĭus, a, um, adj., = *karxhdo/nios, Carchedonian, i. e. Carthaginian (since *karxhdw/n = Carthago): carbunculus,
a brilliant precious stone frequently found in the country of the Carthaginians
, Plin. 37, 7, 25, 92 sq.—Hence, subst.: Car-chēdŏnĭus, ii, m., a Carthaginian, Plaut. Poen. prol. 53.