The term 'BIG NAME IN BRICKS' can be summarized by two crossword solutions: LEGO (4 letters) and DUPLO (5 letters). LEGO is a Danish toy company that produces plastic building blocks for children. The blocks are used to construct models of various shapes and sizes, and the company has become one of the most successful toy companies in the world. DUPLO is a line of larger building blocks produced by LEGO, designed for younger children. Both LEGO and DUPLO have become household names, and are widely recognized as some of the most popular building block toys in the world.