A silvery elemental metal with an atomic number of 28 and symbol Ni.
A coin worth 5 cents.
(by extension) Five dollars.
(by extension) Five hundred dollars.
(sometimes the nickel or the hot nickel) Interstate 5, a highway that runs along the west coast of the United States.
A playing card with the rank of five
A five-year prison sentence.
A defensive formation with five defensive backs, one of whom is a nickelback, instead of the more common four.
To plate with nickel.