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porthole

display window; shop window

curtains

window with a view of a Japanese mugwort thicket

poor house; humble house; primitive house

school

porthole

double-glazed window; double window; storm window

Computing

search box; search bar

hole cut in a wall, panelling, etc. to let light in

useless employees (shunted off by a window to pass their remaining time until retirement)

skylight; trap door

window-sill; window-ledge

air hole

back window; rear window

display window

iron-barred window

prison; jail

prison window; (behind) prison bars

observation window

bamboo window

window with bamboo planted in front

lattice window

dormer (window); lucarne

front window; windshield

Noun or verb acting prenominally

window (e.g. in an envelope, box, etc.); aperture

louvered window