Quarterfoil

• (n.) An ornamental foliation having four lobes, or foils.
Found on http://thinkexist.com/dictionary/meaning/quarterfoil/

Quarterfoil

Quar'ter·foil` noun [ Quarier + foil : confer French quatre .] (Architecture) An ornamental foliation having four lobes, or foils.
Found on http://www.encyclo.co.uk/webster/Q/5

Quarterfoil

In architecture a quarterfoil is an ornamental foliation having four lobes, or foils. The term quatrefoil is applied to a square panel, or a piercing in the tracery of a window, etc, divided by cusps or featherings into four leaves. .Bands of small quatrefoils are much used as ornaments in the Perpendicular style, and sometimes in the Decorated sty...
Found on http://www.probertencyclopaedia.com/browse/TQ.HTM
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