The Collaborative International Dictionary of English v.0.48:

Macaroni \Mac`a*ro"ni\, n.; pl. Macaronis, or Macaronies.
   [Prov. It. macaroni, It. maccheroni, fr. Gr. ? happiness,
   later, a funeral feast, fr. ? blessed, happy. Prob. so called
   because eaten at such feasts in honor of the dead; cf. Gr. ?
   blessed, i. e., dead. Cf. Macaroon.]
   1. Long slender tubes made of a paste chiefly of a wheat
      flour such as semolina, and used as an article of food; a
      form of Italian pasta.
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   Note: A paste similarly prepared is largely used as food in
         Persia, India, and China, but is not commonly made
         tubular like the Italian macaroni. --Balfour (Cyc. of
         India).
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   2. A medley; something droll or extravagant.
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   3. A sort of droll or fool. [Obs.] --Addison.
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   4. A finical person; a fop; -- applied especially to English
      fops of about 1775, who affected the mannerisms and
      clothing of continental Europe. --Goldsmith.
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   5. pl. (U. S. Hist.) The designation of a body of Maryland
      soldiers in the Revolutionary War, distinguished by a rich
      uniform. --W. Irving.
      [1913 Webster] Macaronian