noun
: a flap that is mounted on the undersurface near the trailing edge of an airplane wing and that when lowered increases both the drag and the lift and thus permits landing at lower speed
noun
: a flap that is mounted on the undersurface near the trailing edge of an airplane wing and that when lowered increases both the drag and the lift and thus permits landing at lower speed
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012