Definition of "wrong number" in Englisch

Noun

1. A telephone number dialled by mistake, for example, by transposing digits.

2. A telephone call received from an unfamiliar caller, due to a mistake in the number dialled. (Can we add an example for this sense?)

   • - Who was that on the phone? - It was just a wrong number.

3. An incorrect notion or understanding concerning a person or situation.