See Also: viff(dictionary)

viff (iou)



viff noun & verb. colloq. L20.
[Acronym, from vectoring in forward flight.]
A. noun. A technique used by a vertical take-off aircraft to change direction abruptly by altering the direction of thrust of the aircraft's jet engines. L20.
b. verb intrans. Of a vertical take-off aircraft: change direction in this way. L20.