1) Backswept 2) Backward 3) Swept 1) Swept 2) Used of hair 
[adj] - (especially of aircraft wings) angled rearward from the point of attachment
adjective (especially of aircraft wings) angled rearward from the point of attachment; `aircraft with sweptback wings`
(of the leading edge of an airfoil) forming a markedly obtuse angle with the fuselage. · (of an aircraft or winged missile) having wings of this type.