When you bleed, you lose blood from your body as a result of injury or illness.

If the colour of one substance bleeds into the colour of another substance that it is touching, it goes into the other thing so that its colour changes in an undesirable way.

If someone is being bled, money or other resources are gradually being taken away from them.

If someone is being bled dry or is being bled white, all of their money or other resources are gradually being taken away from them.