A knot is an intertwining of one or more ropes. Knots can also be tied in string, cotton, ribbon, wire, strips of leather, and numerous other materials. Knots are used in many hobbies such as rock climbing, sailing and lace making. They are also used everyday to tie up shoelaces, put up washing lines, tie ribbons on presents and numerous other tasks. It is important to use a suitable knot for the task at hand. Few people take the time to learn a suitable knot, hence the number of shoelaces that come untied and washing lines that fall down.

Knots have been used by humans since prehistory. The Incas of Peru used knots instead of writing - the type of knot, the colour of the cord and the position of the knot on the cord all helped convey complex messages. As well as functional uses, knots have been used for decoration. Many decorative items can be made with knots, including clothing, jewellery and wall hangings. Knots also appear in art, such as the Celtic knot designs.

In more recent times, attempts were made to write down information on knots and knot tying. The most comprehensive guide to knots is The Ashley Book of Knots by Clifford Ashley. It was first published in 1944. This weighty1 volume contains thousands of different knots.

There are many terms used in knot tying, describing parts of knots and specific types of knots. Here are a few of the most commonly used terms:

• A Bend is a knot that joins the ends of two pieces of rope.

• A Bight is a slack part of the rope, particularly where it is forming a loop.

• A Hitch is a knot tied around an object, such as a pole or ring.

• A Lashing is a knot that ties two or more poles together.

• A Loop is a fold in the rope, forming a loop shape.

• Macramé is the art of decorative knot tying.

• Splicing is interweaving the strands of two ropes, or parts of rope, to hold them together.

• A Standing End is the end of the rope which is not being used to tie the knot.

• A Standing Part is the part of the rope not being used to tie the knot.

• Whipping is binding the end of a rope to stop the rope fraying

• A Working End is the end of the rope that is being used to tie the knot. This is also called the running end.

In the acknowledgements of many recent knot books the International Guild of Knot Tyers, or IGKT, will be mentioned. The IGKT was officially started on April, 1982. The aims of the IGKT are to promote knotting, research into knotting, and to act as a consultable authority on knotting. Additional information can be found on the IGKT Website.