"Half-dollar sized" refers to an object that has a diameter approximately equal to that of a U.S. half-dollar coin, which measures about 1.2 inches (30.6 mm). This term is often used to provide a visual reference for the size of various items, making it easier for people to understand their dimensions without needing precise measurements. In everyday contexts, you might hear "half-dollar sized" when describing things like pancakes, coins, or even wounds. Using this comparison helps convey size quickly and effectively, especially in situations where exact measurements are not necessary or practical.