1. One's masculine identity or attributes. It doesn't diminish your manhood to discuss your feelings more openly. He felt like his manhood was being threatened when his wife started making more money than him.
2. euphemism One's penis, testicles, or both. She kicked her date in his manhood when he started getting aggressive with her. You're a fool if you don't wear an athletic cup to protect your manhood out on the field.
See also: manhood
n. penis. His reflexes automatically protect his manhood.