Which term refers to the length of the flag?

The term "fly" specifically refers to the length of the flag that extends from the uppermost edge to the bottom edge when the flag is displayed. In flag terminology, the fly is the part of the flag that is most visible when it is raised on a flagpole, as it is the section that flutters in the wind. This term distinguishes it from other measurements associated with flags, such as the hoist, which refers to the vertical portion, or height, of the flag when it is hung. Understanding these terms is crucial in flag etiquette and correctly identifying and discussing various aspects of flags.