Tabled is one of the states you can apply to a Discussion item or Todo. Tabled means to put aside for later discussion or to be done at a later date. This is also sometimes called a "parking lot".
You will Table a discussion item or Todo when it is not an immediate priority but something that you will want to address in the future and keep on your radar. These are things that are worth noting in your agenda but not something you want to spend any time on in the current agenda.
When you table a discussion item or Todo in Tadum, it gets marked as Tabled and then sorted to the bottom of that section. It will get carried over to the next meeting until you mark it as Open, Closed, Done or delete it.