The compound noun "used-book" is a straightforward and transparent formation in Modern English. It combines the adjective "used," derived from the Latin verb uti meaning "to employ or make use of," with the noun "book," which traces back to the Proto-Germanic word for "beech tree," reflecting ancient writing materials. The logic of the word is entirely literal: a book that has been previously used. This compound exemplifies a common English pattern for creating specific, descriptive terms for everyday objects in the secondary market, directly linking the condition (used) to the item (book) without metaphorical abstraction.

Structure: used (sense) + book (sense) - used: From Middle English 'used', past participle of 'usen' (to use), from Old French 'user', from Latin 'usus', past participle of 'uti' (to use, employ, enjoy). In this compound, it functions as an adjective meaning "having been employed or utilized." - book: From Old English 'bōc' (book, writing, document), from Proto-Germanic 'bōks' (beech, book), from the practice of carving runes on beechwood tablets. It functions as the core noun, denoting the object.