Question

what is meant by reflection of sound

Answer 1

When sound travels in a given medium, it strikes the surface of another medium and bounces back in some other direction, this phenomenon is called the reflection of sound. The waves are called the incident andreflected sound waves.

Answer 2

reflection of sound is same as reflection of light
reflection of sound = echo
it means when sound waves reflect by touching the the necessary medium it comes back to the source where the sound is created