The word is a modern English compound adjective, transparently formed from two native elements. 'Star' descends from the Proto-Germanic 'sternǭ', which itself has a Proto-Indo-European root 'h₂stḗr' meaning 'star'. 'Shaped' derives from the Old English verb 'scieppan', meaning 'to create or form', from Proto-Germanic 'skapjaną'. The compound 'star-shaped' follows a straightforward Germanic pattern of noun + past participle to create a descriptive adjective, literally meaning 'formed into the likeness of a star'. This logical construction allows the modern meaning to be directly inferred from its components, describing any object whose outline mimics the multi-pointed form traditionally associated with a star symbol.

Structure: star (star) + shaped (formed) - star: From Old English 'steorra', meaning a celestial body or a figure with radiating points. In this compound, it functions as the descriptive noun root. - shaped: From Old English 'gesceap' (creation, form) and the past participial suffix '-ed', indicating 'having been given a form'. In this compound, it functions as the adjectival suffix meaning 'having the form of'.