Open English Wordnet
Nouns
(n)nickel, Ni, atomic number 28a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite
(n)nickel, nickel notefive dollars worth of a drug“a nickel bag of drugs”, “a nickel deck of heroin”