noun

• (uncountable) A type of pasta in the form of short tubes, typically boiled and served in soup, with a sauce, or in melted cheese; a dish of this.
  "Take half a pound of small pipe-macaroni."
• (uncountable, obsolete or informal, loosely) Pasta, particularly thicker noodles, spaghetti.
  "Paste made into strings like pack-thread or thongs of whit-leather (which if greater they call Macaroni, if lesser Vermicelli) they cut in pieces and put in their pots as we do oat-meal to make their menestra or broth of."
• (uncountable, obsolete) Synonym of gnocchi (“Italian dumpling made of potato or semolina”).
  "Maccaróni, a kind of meat made of round peeces of paste, boyled in water and put into a dish with butter, spice and grated-cheese vpon them."
• (countable, chiefly historical and derogatory) A dandy or fop, particularly in the 18th century a young Englishman who had travelled in Europe and subsequently dressed and spoke in an ostentatiously affected Continental manner.
  "... the Maccaroni Club (which is composed of all the travelled young men who wear long curls and spying-glasses) ..."

adj

• (historical) Chic, fashionable, stylish; in the manner of a macaroni.

noun

• (obsolete) A macaroon.
  "Macaroni. It comes from Italy. It is a biscuit made of almonds, eggs, flower, and sugar."