The term 'Lunch Box' can be summarized by the crossword solution 'PAIL', which is a four-letter word. A PAIL is a cylindrical container with a handle, typically made of metal, plastic, or wood, and used to carry and store liquids or other substances. It is commonly used to transport food items, such as lunch boxes. Pails are also used in many industries, such as construction, agriculture, and manufacturing.