Word
verdigris, n.
a green patina that forms on copper or brass or bronze that has been exposed to the air or water for long periods of time
<noun.artifact>
verdigris
semantic pointers
hypernym
patina
a blue or green powder used as a paint pigment
<noun.substance>
cupric acetate
verdigris
lexical pointers
derivationally related form
verdigris
semantic pointers
hypernym
pigment