"Pork rub" refers to a flavorful mixture of spices and seasonings that is applied to pork meat before cooking to add taste and enhance its flavor. Full definition
Equal parts brown sugar, kosher salt, and ground spices are the secrets to a perfect pork rub. (epicurious.com)
Remove the loin from the refrigerator and season liberally with your favorite pork rub or Cajun seasoning. (fieryfoodscentral.com)
You can make your own pork rub using 1 teaspoon brown sugar, 1 teaspoon BBQ seasoning (I like McCormick's Grill Mates BBQ Seasoning), 1 teaspoon garlic powder, 1/2 teaspoon cumin, 1/2 -1 teaspoon cayenne pepper, and 1 teaspoon chili powder. (staysnatched.com)