What is the meaning of the word "macaroni wheat"?

Definitions:

  1. A type of hard wheat used primarily for making pasta. copy to clipboard NOUN
    • Today, macaroni wheat is an essential ingredient in pasta dishes enjoyed around the world. copy to clipboard
  2. A type of wheat with hard, dark kernels that is high in gluten and used to make pasta and bread; grown especially in southern Russia, North Africa, and northern central North America. copy to clipboard NOUN
    • The United States is the world's largest producer of macaroni wheat. copy to clipboard
  3. Second most cultivated species of wheat after common wheat, distinguished by its high protein content and hard texture, which makes it ideal for pasta products because it holds its shape well when cooked. copy to clipboard NOUN
    • The ancient Romans were among the first people to cultivate and use macaroni wheat. copy to clipboard

Synonyms: