Source : Webster's Revised Unabridged Dictionary (1913)

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 wheat flour,
      and used as an article of food; Italian or Genoese paste.

Source : WordNet®

macaroni
     n 1: a British dandy in the 18th century who affected Continental
          mannerisms; "Yankee Doodle stuck a feather in his cap
          and called it macaroni"
     2: pasta in the form of slender tubes
     [also: {macaronies} (pl)]