Source : Webster's Revised Unabridged Dictionary (1913)

Jimmy \Jim"my\, n.; pl. {Jimmies}. [Cf. {Jemmy}.]
   A short crowbar used by burglars in breaking open doors.
   [Written also {jemmy}.]

Source : WordNet®

jimmies
     n : bits of sweet chocolate used as a topping on e.g. ice cream
         [syn: {sprinkles}]