Noun
fenestra leading into the cochlea
Source: WordNetTo someone standing in the nave, looking down the length of the church toward the east, the round window would seem like a huge sun exploding into innumerable shards of gorgeous color. Ken Follett
The distinctive round window high in the south transept was originally lit up at night as a beacon for mariners. Source: Internet
The decoration, being mainly polychrome marble, is mostly very flat in nature, but a sort of order is established by the regular compartments and the circular motifs which repeat the shape of the round window. Source: Internet
It features 7 windows, with an convert round window, the largest window on the station (and the largest flown in space to date). Source: Internet