End, goal, or purpose
Tellis is likely a shortened form of the Greek name Aristotellis, which is the modern Greek form of Aristotle. It derives from the elements 'aristos' meaning best and 'telos' meaning purpose or end. In some cases, it may also function as a rare English surname-turned-given-name.
Less common today
Tellis isn't in the latest US Top 1000. It last peaked at #5,585 in 1995.
US births per 5-year period, 1990βpresent (SSA data).
Former NBA power forward
A Spartan soldier mentioned in ancient Greek history