FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

chalkos χαλκός — khal-kos' — perhaps from 5465 through the idea of hollowing out as a vessel (this metal being chiefly used for that purpose); copper (the substance, or some implement or coin made of it):--brass, money.

see GREEK for 5465