complication

noun6

1. •
   The act or process of complicating.
2. •
   The state of being complicated; intricate or confused relation of parts; complexity.
3. •
   A disease or diseases, or adventitious circumstances or conditions, coexistent with and modifying a primary disease, but not necessarily connected with it.
4. •
   A feature beyond basic time display in a timepiece.

   • Obsessed, he was after a watch that contained the greatest number of complications in the boldest combinations in the smallest space imaginable. — 2013
5. •
   A person who doesn't fit in with the main scheme of things; an interloper.
6. •
   (no longer used) A twisting or intertwining.

   • the snaky complication in the Caduceus or rod of Hermes. — 1646