tiān​chuāng

skylight

天窗 tiān​chuāng
skylight noun
a window set in a roof or ceiling for light and ventilation; dormer
sunroof
a sliding or tilting opening in a vehicle roof; hatchway
blank space
a blank space in a newspaper or magazine where an article has been removed (often due to censorship)

Frequency

Movie subtitles
2.15 per million appears in 1% of films
Written text
2.38 per million

Sources