Definition of aerugo in English:

aerugo

noun

  • The patina that copper and brass acquire with age; verdigris. Occasionally more widely: an analogous coating on any metal.

Origin

Late Middle English (in an earlier sense). From classical Latin aerūgō verdigris, in post-classical Latin also mildew of plants (Vulgate) from aer-, aes brass + -ūgō, suffix forming nouns.

Pronunciation:

aerugo

/əˈruːɡəʊ/