The term "lightweight" refers to something that is easy or effortless. It can be used in various contexts, such as describing a person who has little responsibility or someone who takes on tasks with ease and speed. In terms of physical objects, it means an item that weighs very little or requires minimal resources for its operation. For example, lightweight materials like plastic are easier to handle than heavier metals like steel. Overall, the phrase "light weight" implies something that is simple, uncomplicated and easy to manage.