top light (suomeksi)

Määritelmät:

The upper (and usually smaller) part (casement) of a window, often hinged a the topNikolas Davies, Erkki Jokiniemi: [https://books.google.de/books?id=r4R2Sl_hbTwC&lpg=PA219&dq=%22top%20light%22%20dictionary&pg=PA388v=onepage&q=%22top%20light%22%20dictionary&f=false Dictionary of Architecture and Building Construction], p. 388
Any glazing above a main window, partition or door
A skylight
Toplighting: light from above
(''upper part of a window''): fanlight
(''glazing above ...''):
(''skylight''): roof lantern, cupola