The idiom "back burner" means to put something aside or to delay it for a later time. It is often used to describe a situation where a task or project is not a priority and is not receiving immediate attention.
For example, if you have a long to-do list and you decide to prioritize certain tasks over others, the tasks that are less important or urgent may be put on the back burner. This means that you will deal with them later when you have more time or when they become more pressing.
Another example could be a project at work that is not a priority for the company. The project may be put on the back burner until other more important projects are completed.
Overall, the idiom "back burner" is used to describe a situation where something is not a priority and is being delayed or put aside for a later time.
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