The definition for salad dressing is
: a savory liquid or semisolid cooked or uncooked food used as a dressing for salads: such as
a : french dressing
b : mayonnaise 1a
c : a semisolid dressing made of eggs, a fat (as vegetable oil), vinegar or lemon juice, and seasonings cooked with a starch (as wheat, rye, or tapioca flour)
So mayonnaise is a salad dressing? Which fat bastard is using Mayo as a salad dressing?