What does it mean to vibrate?

Vibrating refers to the rapid back-and-forth or oscillating motion of an object around a central point. This movement is typically characterized by quick, repetitive shaking, often at a frequency that generates sound waves or can be sensed physically. In the context of sound production, for instance, vibrations in vocal cords or strings can create audible sounds. The description of moving fast with rapid shaking captures the essence of this phenomenon—involving a quick, oscillatory motion rather than a steady, slow, or stationary state. The other options describe states of motion or positions that do not align with the definition of vibrating, as they either represent a lack of movement or a distinctly different kind of motion.