or (shortened) אָדֹן; from an unused root (meaning to rule); sovereign, i.e. controller (human or divine); lord, master, owner. Compare also names beginning with 'Adoni-'.
for נְחוּשָׁה; copper, hence, something made of that metal, i.e. coin, a fetter; figuratively, base (as compared with gold or silver); brasen, brass, chain, copper, fetter (of brass), filthiness, steel.