Define the term Victorian book chain.

A Victorian book chain, also known as a book strap or a book bracelet, refers to a decorative accessory that was used to secure books during the Victorian era. Made popular in the 19th century, book chains were often made of metal, such as silver or gold, and were designed to prevent the misplacement or theft of valuable books. They served both practical and aesthetic purposes, providing a means to keep books intact while also adding an ornamental touch to their appearance. Victorian book chains typically featured a long chain that could be attached to a book's cover on one end and a decorative clasp on the other end. The clasp would be fastened to a button or hook on a reader's clothing or worn as a bracelet on the wrist. Book chains were considered fashionable accessories among the upper classes during the Victorian era. They were particularly popular among women, who would wear them as part of their attire to demonstrate their love for literature and intellectual pursuits. Moreover, book chains were often customized and personalized, featuring intricate designs, engravings, or gemstones to suit the owner's tastes. While their practical use may have diminished with the passage of time, Victorian book chains remain collectible items today, serving as a reminder of the literary culture and fashion trends of the past.