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

1.
rosone
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
:
•
The magnificent rose window of Notre Dame Cathedral is a masterpiece of medieval art.
Il magnifico rosone della Cattedrale di Notre Dame è un capolavoro dell'arte medievale.
•
The light filtered through the colorful panes of the rose window, casting vibrant patterns on the church floor.
La luce filtrava attraverso i vetri colorati del rosone, proiettando motivi vibranti sul pavimento della chiesa.