a United States coin worth one twentieth of a dollar
five dollars worth of a drug; "a nickel bag of drugs"; "a nickel deck of heroin"
a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite
belonging to times long past especially of the historical period before the fall of the Western Roman Empire; "ancient history"; "ancient civilizations such as those of the Etruscans and Sumerians"; "ancient Greece"