S: (n) window (the time period that is considered best for starting or finishing something) "the expanded window will give us time to catch the thieves"; "they had a window of less than an hour when an attack would have succeeded"
S: (n) dialog box, panel ((computer science) a small temporary window in a graphical user interface that appears in order to request information from the user; after the information has been provided the user dismisses the box with `okay' or `cancel')
S: (n) foreground ((computer science) a window for an active application)
S: (n) device (an instrumentality invented for a particular purpose) "the device is small enough to wear on your wrist"; "a device intended to conserve water"