Heraldic knot
Encyclopedia
A heraldic knot is a knot
Knot
A knot is a method of fastening or securing linear material such as rope by tying or interweaving. It may consist of a length of one or several segments of rope, string, webbing, twine, strap, or even chain interwoven such that the line can bind to itself or to some other object—the "load"...

, unknot
Unknot
The unknot arises in the mathematical theory of knots. Intuitively, the unknot is a closed loop of rope without a knot in it. A knot theorist would describe the unknot as an image of any embedding that can be deformed, i.e. ambient-isotoped, to the standard unknot, i.e. the embedding of the...

, or design incorporating a knot used in European heraldry
Heraldry
Heraldry is the profession, study, or art of creating, granting, and blazoning arms and ruling on questions of rank or protocol, as exercised by an officer of arms. Heraldry comes from Anglo-Norman herald, from the Germanic compound harja-waldaz, "army commander"...

. While a given knot can be used on more than one family's achievement of arms
Coat of arms
A coat of arms is a unique heraldic design on a shield or escutcheon or on a surcoat or tabard used to cover and protect armour and to identify the wearer. Thus the term is often stated as "coat-armour", because it was anciently displayed on the front of a coat of cloth...

, the family on whose coat the knot originated usually gives its name to the said knot (the exception being the Tristram knot). These knots can be used to charge shields and crests
Crest (heraldry)
A crest is a component of an heraldic display, so called because it stands on top of a helmet, as the crest of a jay stands on the bird's head....

, but can also be used in badges or as standalone symbols of the families for whom they are named (like Scottish plaids). The simplest of these patterns, the Bowen knot
Bowen knot
The Bowen knot is not a true knot, but is rather a heraldic knot, sometimes used in heraldic designs. It consists of a rope in the form of a continuous loop laid out as an upright square shape with loops at each of the four corners...

, is often referred to as the heraldic knot in symbolism and art outside of heraldry.
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