The term 'attic function' refers to the use of an attic as a STORAGE space. The two crossword solutions for this term are 'STORAGE' and 'STORING', both with seven letters. Attics are often used to store items that are not used on a regular basis, such as seasonal decorations, old furniture, and other items that do not fit in the main living areas of a home. STORING items in an attic can help to keep a home organized and free up space in other areas.