Definition of "Jimmy"

Jimmy

/ˈd͡ʒɪmi/

proper noun
plural Jimmys or Jimmies
1. A diminutive of the male given names James or Jim, also used as a formal given name.
  Quotations
  Heaven only knows why a man with a strong biblical name like James wants to be a president named Jimmy.
  1979 Charles Kuralt, Dateline America, Harcourt Brace Jovanocich, page 184
2. (Scotland, informal) A colloquial (potentially unfriendly or disparaging) way of addressing any male whose name is unknown to the speaker.
3. A prime mover powered by a two-stroke Detroit Diesel engine.
  Quotations
  Was the dark of the moon on the sixth of JuneIn a Kenworth pullin' logs.Cab-over Pete with a reefer onAnd a Jimmy haulin' hogs.
  1975, “Convoy”, in C.W. McCall, Chip Davis (lyrics), Black Bear Road, performed by C. W. McCall
noun
plural Jimmys or Jimmies
1. (Cockney rhyming slang) Shortened form of Jimmy Riddle, a piddle, a piss.
2. Alternative form of jimmy (“a mature male crab”)