What is the meaning of "does not hold water"?

The meaning of "does not hold water" is:

a statement does not appear to be correct or reasonable

What is the definition of "does not hold water"?

The definition of "does not hold water" is:

a statement does not appear to be correct or reasonable


"does not hold water" means

a statement does not appear to be correct or reasonable

Example Sentences:

A: I believe that dinosaurs were on the earth 6000 years ago.
B: That theory doesn’t hold water. The earth isn’t that young!

When she told me that she thought the sun revolved around the earth, I told her that it doesn’t hold water. The earth moves around the sun!

Media:

doesn't hold water idiom