(electronics) A special type of comparator which provides an indication of whether the input voltage is within a specified range.

A (originally detachable) second window attached on the exterior side of a window in climates with harsh winters, to add an insulating layer of still air between the outside and inside.

A prescheduled time when a system can be taken off-line for maintenance, if necessary.

To decorate the window of a shop / To give something superficial attractiveness

A person who window-shops.

(idiomatic) The browsing of shop windows without any intention of buying.

present participle of window-shop

A projecting shop window, usually with curved sides, common in the 19th century.

Alternative spelling of windowsill

A side window of a motor car that is opened and closed using electric power.