This is the part I endorse.

"Sound is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas."

It does not require the presence of a listener. Nor need it be in a certain range of frequencies. (That would just be a sound you cannot hear.)

What I am saying is, when Barry replies as he does, why don't we just say, "You are confused about what is and is not sound. Go ask the physicists, 'What is sound?' and then we can continue this conversation, or if you don't want to bother, you can take my word for it."

When physicists have a consensus view of a phenomenon, we shouldn't argue over definitions. We should use their definitions, provisionally, of course.

No one thinks it makes sense to argue over what is or is not an atom. I don't see why 'sound' should be in a different category.