The crossword solution for the term 'buttonholes, e.g.' is 'SLITS' (5 letters). Buttonholes are small holes in fabric that are used to thread buttons through. They are usually found on clothing items such as shirts and jackets. SLITS are narrow openings in fabric that are similar to buttonholes, but are not used to thread buttons through. They are often used to add decorative detail or to provide ventilation.