The term 'copy or duplicate' can be summarized by the crossword solution 'REPRO', which is a five-letter word. REPRO is short for reproduction, which is the process of making copies or duplicates of something. This could refer to making physical copies of documents, photographs, or other items, or it could refer to making digital copies of files or images. Reproduction is an important part of many industries, such as printing, publishing, and photography.