Bobbins are small cylindrical objects used in a variety of industries, such as sewing and weaving. They are typically made of plastic or wood and are used to hold thread, yarn, or other materials. The term 'bobbins' can also refer to the reels, pirns, and SPOOLS that are used to store and transport these materials. Reels are five-letter objects that are used to wind thread or yarn onto a spool. Pirns are five-letter objects that are used to hold the thread or yarn in place while it is being wound onto a spool. SPOOLS are six-letter objects that are used to store and transport thread or yarn.