Anchor knot, also known as a stopper knot, is a knot that is used to prevent the end of a rope from slipping through a pulley or a hole. This knot is commonly used in sailing, fishing, and rock climbing, among other activities. There are several synonyms for the term anchor knot, including terminal knot, end knot, and finishing knot. Another synonym for the anchor knot is the figure-eight knot, which is a knot that is similar to the anchor knot but is tied in the shape of a figure-eight. Other synonyms for the anchor knot include the double-overhand knot, the triple-overhand knot, and the monkey knot.