1A small pane above a main window, which typically opens outwards and upwards.
顶玻璃（尤指可向外，向上开的主窗上方的小玻璃）
the window was open at the top, for creeper could be seen disappearing through the top light
Example sentencesExamples
Horizontal bandings and circular-framed top lights accent the windows.
Instead of ridge planting she has inserted the glazed top light and surrounded it with planters buried in the thatch.
2A skylight.
天窗
Example sentencesExamples
Daylighting also progresses with the domestic windows of the old, leading to the baffled top light of the long apertures that run the full length of the extension's rough plaster ceilings.
In Munich large paintings were displayed in lofty rooms fitted with top lights, while small cabinet pictures were hung in the surrounding rooms with windows at the side.
Definition of top light in US English:
top light
(also toplight)
noun
1A skylight.
天窗
a top-lighted gallery
Example sentencesExamples
Daylighting also progresses with the domestic windows of the old, leading to the baffled top light of the long apertures that run the full length of the extension's rough plaster ceilings.
In Munich large paintings were displayed in lofty rooms fitted with top lights, while small cabinet pictures were hung in the surrounding rooms with windows at the side.
2British A small pane above a main window, typically opening outward and upward.
顶玻璃（尤指可向外，向上开的主窗上方的小玻璃）
Example sentencesExamples
Horizontal bandings and circular-framed top lights accent the windows.
Instead of ridge planting she has inserted the glazed top light and surrounded it with planters buried in the thatch.