What is bunion? How to use in English

The word "bunion" has its roots in ancient Greece. The term "bunio" (βουνίον) was used to describe a small hill or swelling, particularly on the foot. This Greek term was later adapted into Latin as "bunio", and then into Middle English as "bunyon". In the 15th century, the term "bunyon" referred to a swelling or lump on the foot, often due to anatomical irregularities. Over time, the term evolved to specifically describe a painful, inflamed joint on the big toe, commonly known today as a bunion. Throughout history, the term "bunion" has maintained its connection to the Greek concept of a small hill or swelling, reflecting the characteristic bump that forms on the big toe in cases of bunions.