- Quatrefoil
The word "quatrefoil" etymologically means "four leaves", and applies to general four-lobed shapes in various contexts.
In heraldry
In heraldic terminology, a quatrefoil is a representation of a flower with four petals, or a leaf with four leaflets (such as a four-leaf clover). It is sometimes shown "slipped", i.e. with an attached stalk. However, it is not defined as a flower, but called a "foil".
In architecture/symbolism
In architecture and traditional Christian symbolism, a quatrefoil is a symmetrical shape which forms the overall outline of four partially-overlapping circles of the same diameter. Two common types of quatrefoil are shown in the first two images below (click on the images for larger illustrations, and explanation of the geometry involved):
The quatrefoil enjoyed its peak popularity during the Gothic Revival and
Renaissance , but can still be seen on countless churches and cathedrals today. It is most commonly found astracery , mainly inGothic architecture , where a quatrefoil can often be seen at the top of a Gothic arch, sometimes withstained glass on the interior.In art, the quatrefoil is a type of decorative framework (mainly used in engraving), consisting of an architectural quatrefoil combined with a square (just as the
trefoil is often combined with an equilateral triangle), as seen in the image on the right above. Among the most famous works of art employing the quatrefoil are the bronze panels on the South Doors of the Baptistery inFlorence byAndrea Pisano , the bronze panels of the North Doors of the Baptistery inFlorence byLorenzo Ghiberti , and alsoFilippo Brunelleschi 's famous competition entry for the same doors, "The Sacrifice ofIsaac ") as well as "Head of an Angel" byPiero della Francesca .Military
The word quatrefoil can also refer to a four-pointed decoration on the top of a warrant or commissioned Marine officer's dress and service caps. Tradition tells that the design was first used on sailing ships so that Marine sharpshooters in the rigging did not shoot their own officers on the deck.
orority
The quatrefoil is also the national symbol of the women's fraternity
Phi Mu (a member of theNational Panhellenic Conference .)Four-leaf clover
The
four-leaf clover is a symbol of good luck.ee also
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Trefoil References
*The Artist Blacksmith, Volume 5, Number 4. www.Artist-Blacksmith.org.
*The Artist Blacksmith, Volume 6, Number 1, 2 & 3.
*The Hammers Blow, Volume 6, Number 4.External links
* [http://www.bc.edu/bc_org/avp/cas/ashp/brunelleschi_ghiberti.html Pictures of Ghiberti's and Brunelleschi's quatrefoils]
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