The term 'BIG NAME IN INFOMERCIALS' can be summarized by the crossword solution 'RONCO', which is a five-letter word. Ronco is a company that has been producing and selling products through infomercials since the 1970s. Founded by Ron Popeil, the company is best known for its kitchen gadgets, such as the Veg-O-Matic and the Pocket Fisherman. Ronco has become a big name in infomercials due to its long history of success and its wide range of products.