Definition of bun

The word "bun" has its origins in Old English. The term "bun" can be traced back to the Proto-Germanic word "buinaz", which was derived from the Proto-Indo-European root "bew-", meaning "to swell" or "to grow". This root is also seen in other languages, such as the Latin "bonus", meaning "good" or "swelling", and the Greek "bounos", meaning "swelling" or "growing". In Old English, the word "bun" referred to a type of bread roll or a ball of dough. Over time, the meaning of the word expanded to include other types of baked goods, such as sweet buns and dinner buns. Today, the term "bun" is a common noun in many English-speaking countries, and is often used to refer to a variety of sweet and savory baked goods.