Yarn is thread made by spinning together fibers like wool, cotton, or silk. People use yarn for knitting sweaters, crocheting blankets, or weaving fabric. If you've ever watched someone knit a scarf, those soft strands wrapping around the needles are yarn.

The word also means a long, entertaining story, especially one that might stretch the truth a bit. When a sailor tells a tall tale about wrestling a giant octopus, that's spinning a yarn. Your grandfather might spin a yarn about his childhood adventures that sound almost too exciting to be completely true. These stories are called yarns because they unwind and stretch out, like pulling thread from a ball of yarn.

Cats famously love playing with balls of yarn, batting them around and watching them unroll. But while yarn is fun for cats, it matters most to people who create things with their hands. Before factories mass-produced clothing, every shirt and blanket began as yarn that someone had spun by hand. Even today, many people find knitting or crocheting with yarn relaxing and satisfying, turning simple thread into something useful and beautiful.