Corn dab refers to the act of adding a small amount of butter or other toppings to a piece of corn. There are various synonyms for the word corn dab, including corn smear or butter smear. Some people refer to it as "dabbing butter" or "dabbling" corn, while others use terms like "basting" or "smoothing" the corn. There are also regional variations, like "applying a dab of grease," "slopping" butter, or "painting" the kernels. Regardless of the term used, corn dabbing is a popular way to add flavor and moisture to corn, making it more enjoyable and satisfying to eat.