If something spouts liquid or fire, or if liquid or fire spout out of something, it comes out very quickly with a lot of force.

A spout of liquid is a long stream of it which is coming out of something very forcefully.

If you say that a person spouts something, you disapprove of them because they say something which you do not agree with or which you think they do not honestly feel.

A spout is a long, hollow part of a container through which liquids can be poured out easily.

If you say that something is up the spout, you mean that it is wrong or it is no longer working.