Synonyms for Nickel (same or very similar meaning)
WordNet sense 1 (a hard malleable ductile silvery metallic element that is resistant to corrosion; used in alloys; occurs in pentlandite and smaltite and garnierite and millerite):
NiWordNet sense 2 (five dollars worth of a drug):
nickel noteFrom the ODE community, based on WordNetadd/edit