FROM STRONG’S HEBREW DICTIONARY (1890)

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

nachuwsh naw-khoosh' — apparently passive participle of 5172 (perhaps in the sense of ringing, i.e. bell-metal; or from the red color of the throat of a serpent (5175, as denominative) when hissing); coppery, i.e. (figuratively) hard:--of brass.

see HEBREW for 05172 see HEBREW for 05175