verdigris /ˈvɝ.də.ɡɹis/noun 3verb 1forms 3 noun3 •A blue-green patina or rust that forms on copper-containing metals.Let's to^([sic]) the museum. Cannon-balls; arrow-heads; Roman glass and a forceps green with verdigris. — 1922 •(old-fashioned) Copper acetate. •The color of this patina or material. verb1 •To cover, or coat, with verdigris.[…] there were always some wretched musicians, with an old fiddle, an old clarinet, and an old verdigrised brass bugle[…] — 1853 formsverdigrised · verdigrising · verdigrises