Which expressions have no meaning?

Let's analyse each expression:

* $$0 : (89 - 75)$$
$$0 : 14 = 0$$
This expression has meaning.

* $$1 : 1 - 1$$
$$1 - 1 = 0$$
This expression has meaning.

* $$0 : 10 = 0$$
This expression has meaning.

* $$10 : 0$$
Division by zero is undefined.
This expression has no meaning.

The expression that has no meaning is 10 : 0