Source : WordNet®

Ni
     n : a hard malleable ductile silvery metallic element that is
         resistant to corrosion; used in alloys; occurs in
         pentlandite and smaltite and garnierite and millerite
         [syn: {nickel}, {atomic number 28}]

Source : Free On-Line Dictionary of Computing

ni
     
         The {country code} for Nicaragua.
     
        (1999-01-27)