a traveling or moveable counter-balanced pole (also calledfishpole or fishing rod), arm, or telescoped extension device upon which a microphone, light or camera can be suspended overhead above a scene and outside the frame during filming (by a boom operator or boom man); for example, a microphone (mike) boom, a camera boom, or a light boom; the most common film mistake is the appearance of the boom mike (or its shadow) in the frame; a mechanical boom mike is known as a 'giraffe.'