rose window
US /ˈroʊz ˌwɪn.doʊ/
UK /ˈroʊz ˌwɪn.doʊ/

1.
Rosettenfenster, Rose
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.
Das prächtige Rosettenfenster der Kathedrale Notre Dame ist ein Meisterwerk mittelalterlicher Kunst.
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The light filtered through the colorful panes of the rose window, casting vibrant patterns on the church floor.
Das Licht filterte durch die farbigen Scheiben des Rosettenfensters und warf lebendige Muster auf den Kirchenboden.