The figure-eight knot is a type of knot commonly used in climbing, sailing, and other outdoor activities. It is known for its strength and reliability, making it a popular choice for securing ropes. The knot resembles the number eight and is easy to tie and untie, even after bearing a heavy load. To tie a figure-eight knot, start by creating a loop with the rope, then pass the working end through the loop and around the standing part before bringing it back through the loop. This simple technique ensures a secure connection, making it essential for safety in various applications.