The phrase "fresh sliced avocado" refers to a preparation method where an avocado is cut into thin, even slices while still in its ripe state. This allows for easy consumption and use in various dishes such as salads or sandwiches without the need for peeling or pitting the fruit first. The term "fresh" indicates that the avocado has been recently harvested and is not yet overripe, while "sliced" describes the uniformity of the cut pieces.