An opening, usually covered by one or more panes of clear glass, to allow light and air from outside to enter a building or vehicle.

(transitive) To furnish with windows. / (transitive) To place at or in a window. / (transitive, signal processing) To apply a window function to (a signal).

Alternative form of window box

(intransitive) To engage in window-shopping; to browse the windows of shops with no intention of buying anything.

The decorative display of retail merchandise in store windows; the goods and trimmings used in such a display. / (uncountable) The process, skill or task of creating such a display.

A person whose job is to clean windows. / A product, such as Windex, used to clean windows.

The wooden, aluminium or PVC etc. framework around a window

(architecture) The horizontal member protruding from the base of a window frame.

A narrow box filled with earth, placed on a windowsill and used for growing plants. / One of the hollows in the sides of a window frame for the weights which counterbalance a lifting sash.

A piece of glass filling a window or a section of a window / (slang) A quadruple dose of liquid LSD.