convolute

Short definition from Wiktionary

Verb

1. 1
   To make unnecessarily complex.
2. 2
   To fold or coil into numerous overlapping layers.
3. 3
   To confuse, mix up (something) with something else.

Adjective

1. 1
   Convoluted.
2. 2
   Coiled such that one edge is inside, and one outside the coil, giving a spiral effect in cross section.