defensivea.[Cf. F. dfensif.]1. Serving to defend or protect; proper for defense; opposed to offensive; as, defensive armor.()A moat defensive to a house. (Shak.)2. Carried on by resisting attack or aggression; -- opposed to offensive; as, defensive war.()3. In a state or posture of defense.(Milton.)n. That which defends; a safeguard.()Wars preventive, upon just fears, are true defensives. (Bacon.)To be on the defensive, To stand on the defensive, to be or stand in a state or posture of defense or resistance, in opposition to aggression or attack.()