While the term "finger" isn't used in the game, it is a popular nickname for these Tears. Elizabeth has the ability to open and manipulate them, which is crucial to the game's story and gameplay.
It's important to note that Elizabeth's Tears are not just a plot device. They are a core part of the game's narrative, exploring themes of free will, determinism, and the nature of reality.
If you have a more specific question about Elizabeth's Tears, please feel free to ask!