Knot

not, the interlacement of the parts of a cord; or the union of two threads, strings, cords, or ropes by intertwining loops. In either case the loops may be drawn tight without slipping. The safety of a knot is due to friction. A knot that must be picked open is called a hard knot. A knot tied in such a way that it may be united by pulling the free ends is called a bow knot. Some of the more important knots are the square, reef, or surgeon's knot, the granny's knot, the overhand knot, the weaver's knot, and the lover's knot.