The term 'Grand Lineup' is a phrase used to describe an impressive ARRAY of people or objects. It is often used to refer to a large group of people, such as a parade or a line of cars. The term can also be used to describe a large collection of objects, such as a display of artwork or a selection of products. The crossword solution for the term 'Grand Lineup' is 'ARRAY, ' which is a term used to describe a group of items arranged in a particular order.