A “costermonger” is a term that traditionally refers to a person, typically in the UK, who sells fruits and vegetables from a barrow or cart in the streets. The term originated in the late 19th century and is derived from “costard,” which is an old term for a type of apple, combined with “monger,” meaning seller or trader. Costermongers were often associated with informal street markets and were known for their lively and colorful selling techniques.