The phrase "tablespoon sugar" means using one level tablespoon of sugar in a recipe or when adding sugar to something like coffee or tea. Full definition
Beat remaining 1 cup cream and 2 tablespoons sugar in medium bowl until very thick but not yet holding peaks; fold into peanut butter mixture in 3 additions. (bonappetit.com)
Sprinkle remaining 2 tablespoons sugar over top of cake. (soupaddict.com)
In another bowl, beat together the egg whites with the remaining 2 tablespoons sugar until stiff peaks form. (pastryaffair.com)