1) Hook 
A buttonhook is a tool used to facilitate the closing of shoes, gloves or other apparel that uses buttons as fasteners. It consists of a hook fixed to a handle which may be simple or decorative as part of a dresser set or chatelaine. Sometimes they were given away as promotions with product advertising on the handle. To use, the hook end is insert...
[n] - a hook for pulling a button through a buttonhole
noun a hook for pulling a button through a buttonhole
a small, usually metal hook for pulling buttons through buttonholes, as on gloves, dresses, breeches, etc.