These circular windows, often found in medieval churches and Gothic architecture, are generally ornamented with stained glass and stone tracery laid out in round, radiating, shaft patterns. Since the pattern often resembles a rose with radiating petals, the term “rose window” is often misattributed to the flower; in fact, the 17th century name likely stems from the Old French word roué, meaning wheel. What role did the crusaders play in the spread of this decorative window style? Discuss
Source: The Free Dictionary