List line is a term used to describe a sequence of items, usually written or printed, that are organized in a specific order. It is commonly used in the context of shopping lists, to-do lists, and other types of lists. List lines can also be used to organize information in a more efficient way, such as in a spreadsheet or database. List lines are often used to keep track of tasks, prioritize tasks, and make sure that all items on the list are completed.