"Out Of" is a phrase commonly used to indicate that something is no longer available or has been depleted. For example, if a store is "out of" a specific product, it means they do not have any left in stock. This expression can apply to various contexts, such as food, supplies, or even emotions. Additionally, "Out Of" can describe a state of being removed from a particular situation or location. For instance, someone might say they are "out of the office" to indicate they are not present at work. This usage helps clarify someone's availability or location in both personal and professional settings.