What is another name for a double overhand knot?

The double overhand knot is commonly referred to as the barrel knot. This knot is created by taking a running end of the rope and tying it in a way that forms two turns over the standing part, effectively doubling the knot and making it secure. The name "barrel knot" reflects its shape and function; it often flattens out and can act as a stopper knot that prevents the rope from slipping through anchors. This versatility and security make it a useful knot in various applications, particularly in rescue scenarios where a reliable fastening is critical. Other names in the options refer to different knots entirely, serving different purposes, which is why they do not apply in this context.