What is a right?

My last post about a list of men's rights ran into criticism that some of them weren't rights, namely having the same longevity as women and the same suicide rate as women. Some also commented that having no financial objectification, just like feminists want no sexual objectification, was also not a right.

So, before I complete this project of compiling the list of men's rights, we need to know precisely what a right is.

I'm thinking of having those issues mentioned above as motivations for having a list of rights.

Comments please.