Tooltip on Deal Stages?

Tooltip on Deal Stages?

Is it possible to make a definition of each stage? and have it populate somewhere on the Deals module? possibly as a tooltip when you are viewing the pipeline?

Here is some background:

The stages which we have built need to be clearly defined and understood by the end user sales team. A definition for each stage, possibly as a tooltip, would really help them to keep their deals properly aligned with company goals.