- A bright silver-white metallic element. It is of the iron
group, and is hard, malleable, and ductile. It occurs combined with
sulphur in millerite, with arsenic in the mineral niccolite, and with
arsenic and sulphur in nickel glance. Symbol Ni. Atomic weight 58.6. - A small coin made of or containing nickel; esp., a
five-cent piece.