Verdigris

vcr'di-gris, n. the rust of copper, bra , or Inonzr a bluish-green paint got artificially from copper plates [A coir, of O Fr verderis -Low L. vinde tens. ‘the green of bra ’ (which was the name the alchemists gave The -ghas slipped in through the influence of Grease. See verdant and Ore.]