A red nose resulting from alcoholism.

cupronickel

plural of copper-nickel

plural of copper nose

(slang, US, intransitive) To draw attention to something about to happen or already in progress in the hope of preventing it from proceeding.

plural of bent copper

(UK, informal, law enforcement) A corrupt police officer.

(rare) brass / chalcopyrite

plural of copper acetate

(chemistry) a chemical compound with the formula Cu(OAc)₂