What does the word arsenic mean?

Usage examples for arsenic

  1. He had taken to the doctors' medicines again- arsenic and iron and so forth- and the quiet and fresh air they had prescribed were here in plenty; would nothing do him any good? – The Great Hunger by Johan Bojer
  2. Both these valleys are very fertile; in the latter one, and just before its junction with the former, are several yellow arsenic mines, but the working of these is not encouraged by the present ruler. – Memoir of William Watts McNair by J. E. Howard