(verb)
to talk rapidly and/or without a pause, typically without much purpose or substance;
e.g. She listened to the child rattle about his toy train.
(verb)
to move with a clattering sound, often used to describe the motion of a vehicle, may also be used figuratively to describe being or moving about in a space that is larger than necessary;
e.g. They heard the train over the bridge across the river.
(verb)
to say or do/execute something in a brisk and energetic manner;
e.g. She began to rattle off a list of things she planned to do that day.
(verb)
to upset or disturb someone, to the point that they lose their composure;
e.g. The news was shocking enough to rattle even the strongest among them.
(noun)
a series of sharp clattering sounds in rapid succession, or more generally, an unwanted or bothersome noise;
e.g. The rattle and chaos in the room was giving me a headache.
(noun)
a baby's toy that consists of a case filled with beads or pellets that make a clattering sound when shaken;
e.g. The baby shook the rattle and laughed at the sound it made.