An opening in the wall or roof of a building or vehicle that is fitted with glass or other transparent material, in a frame, to admit light or air and allow people to see out.

She looked out the window to watch the rain fall.

A period of time during which a particular opportunity is available.

There is a small window of opportunity to apply for the grant.

A transparent panel on a computer screen through which a user can view and interact with a program or document.

He opened a new window to start working on the spreadsheet.

A display area in a shop front, used to showcase goods for sale.

The store's window was filled with the latest fashion trends.

windowverb

To provide or fit with a window or windows.

The architect decided to window the entire side of the building to allow more natural light.

To display or arrange (goods) in a shop window.

The store manager decided to window the new collection to attract more customers.

windowadjective

Designed for use in, on, or relating to a window; situated beside a window.

She chose a window seat to enjoy the view during the flight.