The invention relates to a blade 1 for wiping a vehicle window, including at least one device 2 for spraying a liquid for washing the window, arranged in order to spray said washing liquid onto a first area 61 of the window wiped by the wiper blade 1, characterized by including a means 3 for spraying the washing liquid, arranged such as to spray the washing liquid onto at least one area of the window other than the first area 61, referred to as second area 62. The invention is useful in motor vehicles.