A dry rub is a mixture used to season and marinate meat before it's cooked (typically, but not always, barbequed). To barbeque aficionados, a man's dry rub recipe is a closely guarded secret to be shared only with the closest of family, if at all.
A good, basic dry rub can be made with a simple "8/3/1+1" recipe:
The "other stuff" can be just about whatever you want it to be. Some things you might try include some mixture of:
or whatever spice you happen to love. It's good to experiment.
Typically a dry rub is generously applied to the meat and is allowed to marinate anywhere from an hour to overnight. Then it's stuck over a fire. Yum!