The tallest finger is commonly called the middle finger. It's also known as the long finger, tall finger, third finger, digitus medius, digitus tertius, or digitus III in anatomical terms. It's typically situated between the index finger and the ring finger and is usually the longest digit on the hand.
Several sources confirm this:
- e-Anatomy: States that the middle finger "is usually the longest finger." https://www.imaios.com/en/e-anatomy/anatomical-structure/middle-finger-1536887640
- Reddit discussion on finger names: While discussing finger names in various languages, this thread implicitly confirms the middle finger's length. https://www.reddit.com/r/etymology/comments/a36kb4/the_names_and_meanings_of_each_finger_in/
Note that while the question asks for the tallest finger, the term "tall" is used colloquially and interchangeably with "long" in this context. There is no separate, distinct finger officially designated as the "tallest finger".
