Any material (either pictures or words or video, etc) that is sexually explicit that is designed in any way (whether primarily or even secondary or tertiary, or even accidentally) to produce sexual arousal in viewers, or any non-sexually explicit material that can also be used to produce sexual arousal (but not necessarily at the fault of the creator).
My Sexual Sobriety Definition
To live a life of self-control and complete honesty and transparency and authenticity and to free from bondage to my addictive behaviors of viewing pornography and masturbation. This means to not look on anything on purpose (or accidentally on purpose) that could be considered pornography and definitely absolutely no masturbation.
1:18 You know that from your empty way of life inherited from your ancestors you were ransomed – not by perishable things like silver or gold, 19 but by precious blood like that of an unblemished and spotless lamb, namely Christ. […]