Rattle, in the context of shaking, refers to a quick, repeated movement that produces a series of short, sharp sounds. This action can occur in various objects, such as a rattle toy for infants, which is designed to engage their senses and promote motor skills. Rattling can also happen in natural settings, like when leaves shake in the wind or when animals, such as snakes, rattle their tails as a warning. The sound produced by rattling is often associated with loose parts within an object, like keys in a pocket or cans in a container. Rattling can indicate movement or disturbance, and it is commonly used in music, where instruments like the maracas create rhythmic sounds through shaking.