triquetra
triquetra[trʌɪˈkwɛtrə, -ˈkwiːtrə](pl. triquetrae -triː)- a symmetrical triangular ornament of three interlaced arcs used on metalwork and stone crosses
三角形图案装饰
语源- late 16th cent. (originally denoting a triangle): from Latin, feminine of triquetrus 'three-cornered'
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