Defender/dɪˈfendər/ Definition 1 of 5Pro Tip 1/2Protective Connotation The word 'defender' often implies a protective and positive connotation. Her big brother is always her defender at school. Pro Tip 2/2Not Always Physical 'Defender' can refer to one who protects ideas or goals, not just from physical harm. He's a defender of free speech online.