aerugo
Metallic rust, particularly of brass or copperMetallic rust, particularly of brass or copper; verdigris; patina.
/iːˈɹuːɡoʊ/
Meaning
1 senses(uncountable)Metallic rust, particularly of brass or copper; verdigris; patina.
Origin
Borrowed from Latin aerūgō, from aes (“copper, bronze, brass”).Borrowed from Latin aerūgō, from aes (“copper, bronze, brass”).
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable