Wiktionary
n. An aerobatic maneuver in which an airplane makes a steep climb followed by a vertical flat-turn (the plane turns to its side, without rolling) and a short dive, levelling out to fly in the opposite direction from which the maneuver began.
Wikipedia
A wingover (also called a wing-over-wing, crop-duster turn or box-canyon turn) is an aerobatic maneuver in which an airplane makes a steep climb, followed by a vertical flat-turn (the plane turns to its side, without rolling, similar to the way a car turns). The maneuver ends with a short dive as the plane gently levels out, flying in the opposite direction from which the maneuver began.
Usage examples of "wingover".
Coyote killed the afterburner, then snapped the Tomcat into a wingover which sent the heavy aircraft plunging toward the cloud deck in an inverted dive.
When Wilfrid von Gerlach laid out the Stuka that is what they told him about the Wingover.
Tucking Wingover under her arm, Kitiara took to sprinting far ahead, relying on the gnome's far-seeing to keep them from getting lost.
He nodded, made some more wingovers with his hands and reached for his phone.
If you did it right, you could hang here no matter what the lead plane was doing flying straight and level, banking, climbing, diving, executing wingovers, loops.