rose window
US /ˈroʊz ˌwɪn.doʊ/
UK /ˈroʊz ˌwɪn.doʊ/
1.
a circular stained-glass window, often found in Gothic cathedrals and churches, characterized by tracery radiating from the center like the petals of a rose
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The magnificent rose window of Notre Dame Cathedral is a masterpiece of medieval art.
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The light filtered through the colorful panes of the rose window, casting vibrant patterns on the church floor.