The Fisherman's Knot has picked up many different names over the years (Cinch Knot, True Lovers Knot, Clinch Knot, Angler's Knot, Waterman's Knot, English Knot, Halibut Knot, Englishman's Bend). It is a strong method of joining the ends of two lines together. It is very effective with small diameter strings and twines, as well as and especially fishing lines. The Fisherman's Knot will not slip under strain.
To Tie a Fisherman's Knot:
Form an Overhand Knot at the end of a line like shown and pass the working end of a second line through the loop of the knot.
Form the second overhand knot around the standing part of the first line like shown.
Tighten both knots and then pull on the standing parts of both lines.
Continue pulling on the standing parts until the two overhand knots are jammed firmly together. The knot is now complete.