Noun crackerjack has 2 senses
  1. jimdandy, jimhickey, crackerjack - someone excellent of their kind; "he's a jimdandy of a soldier"
    --1 is a kind of ideal, paragon, nonpareil, saint, apotheosis, nonesuch, nonsuch
  2. jimdandy, jimhickey, crackerjack - something excellent of its kind; "the bike was a jimdandy"
    --2 is a kind of thing
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