window

US /ˈwɪndoʊ/

・

UK /ˈwɪndəʊ/

Opening in a wall or door to let in light
Opening in a wall through which people do business
An opening in a wall or roof of a building or vehicle that is fitted with glass or other transparent material to allow light or air to enter and allow people to see out.
A favorable opportunity; a propitious time.
A rectangular area on a computer display screen, in which a program or document can be viewed.