A "tad" is an informal term used to describe a small amount or a slight degree of something. It is often used in everyday conversation to indicate that something is just a little more or less than a certain point. For example, one might say, "I need a tad more salt in this recipe," meaning just a small addition is required. The term is commonly used in various contexts, such as cooking, measuring, or expressing feelings. While it is not a precise measurement, it conveys the idea of a minor adjustment or quantity, making it a useful expression in casual discussions.