The term 'NURSE's Office Supply' can be broken down into two crossword solutions: Epipens (7 letters) and Cottonballs (11 letters). Epipens are a medical device used to treat severe allergic reactions, typically by administering a dose of epinephrine. Cottonballs are small, fluffy balls of cotton that are often used in medical settings for cleaning and dressing wounds. Both items are essential supplies for nurses in their offices.