The term 'Calvin or Robert' can be solved by the crossword answer 'Klein', which is a five-letter word. Klein is a surname of German origin, and it is also the name of a fashion brand founded by Calvin Klein and his business partner Barry Schwartz in 1968. The company is known for its designer clothing, accessories, and fragrances. Robert is a given name, and it is also the name of a fashion designer who has worked with the Klein brand.