intricate

Short definition from Wiktionary

Adjective

1. 1
   Having a great deal of fine detail or complexity.
2. 2
   Difficult to disentangle, puzzle apart, or resolve; enigmatic, obscure.

Verb

1. 1
   To become enmeshed or entangled.
2. 2
   To enmesh or entangle: to cause to intricate.