noun.
A silvery, hard, ductile, ferromagnetic metallic element used in corrosion-resistant alloys, stainless steel, catalysts for hydrogenation, and batteries, and for electroplating. Atomic number 28; atomic weight 58.69; melting point 1,455°C; boiling point 2,913°C; specific gravity 8.902; valence 0, 1, 2, 3. cross-reference: Periodic Table.
noun.
A coin of the United States or Canada worth five cents.
transitive verb.
To coat with nickel.