'chestnut-like' originates from the word 'chestnut,' which comes from the Old French 'chastaigne,' derived from the Latin 'castanea,' meaning 'chestnut tree.'

'chastaigne' transformed into the Middle English word 'chesteine,' and eventually became the modern English word 'chestnut.'

Initially, it referred to the 'chestnut tree,' but over time it evolved to describe anything resembling a chestnut, especially in color.