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square knot
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Greek snake bracelet Several types of knots
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square knot

Also known as: Hercules knot, reef knot
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Greek snake bracelet
Greek snake bracelet Greek gold spiral bracelet of two snakes whose tails are tied in a Hercules knot that is decorated with a garnet in a bezel setting; in the Schmuckmuseum Pforzheim, Germany.

A square knot, also known as a reef knot, is a knot formed by two reverse half-knots. It is typically used to join the ends of two cords. This knot flattens when pulled tight, making it useful for tasks such as tying packages or in first aid applications. The reef knot specifically is used in reefing a sail.123

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