'hindpart' originates from Old English elements: 'hind' (Old English 'hind' meaning 'rear' or 'at the back') combined with 'part' (Old English 'part' meaning 'portion' or 'piece').

'hindpart' developed from the Old English combination of 'hind' + 'part'; the compound appears in Middle and Early Modern English as a descriptive term for the rear portion of animals or objects and eventually established the modern form 'hindpart' (plural 'hindparts').

Initially, the compound specifically referred to the rear portion of an animal (often the hind legs and surrounding area); over time it has been used more generally for the back or rear parts of animals and, less commonly, of objects.