The term "heaviest" refers to the measurement of weight, indicating that an object has more mass than others. In scientific terms, weight is the force exerted by gravity on an object, which can vary depending on the gravitational pull of the planet or celestial body. In everyday language, "heaviest" is often used to compare items, such as weights, luggage, or even animals. For example, the blue whale is considered the heaviest animal on Earth, weighing up to 200 tons. Understanding weight helps in various fields, including physics, engineering, and logistics.