Spider silk (also known as spider webs) is a substance used by spiders to trap their prey. In stories, movies, TV shows, games and RPs, spider silk may also trap a human.
Spider silk is sticky and strong and it is said to be stronger than steel. Many characters are often unable to escape the webs on their own but it is possible for him or her to be freed from it. Spider silk can also be used a gag which renders the person unable to speak.