Final answer:
Priapism is defined as a persistent penile erection that can be related to spinal injuries. It's a medical condition that requires attention to prevent potential tissue damage.
Step-by-step explanation:
The term priapism means a persistent penile erection that continues hours beyond, or is unrelated to, sexual stimulation. Priapism can occur in injuries of the spine, affecting the nerves that control blood flow to the, among other causes. This condition often requires medical attention to prevent damage to the penile tissue.