Question

3) What do you mean by thunder?​

Answer 1

Thunder is the sound that accompanies lightning during a thunderstorm. Sounds simple enough, but why does lightning even make a sound? Any sound you hear is made up of vibrations. The vibrations travel as a sound wave through the air, until they reach your ear.

Answer 2

Answer:

a loud, explosive, resounding noise produced by the explosive expansion of air heated by a lightning discharge. any loud, resounding noise: the thunder of applause. a threatening or startling utterance, denunciation, or the like.