n.1. a. An intricate structure of interconnecting passages through which it is difficult to find one's way; a maze.
b. Labyrinth Greek Mythology The maze in which the Minotaur was confined.
2. A design consisting of a single unbranching but highly convoluted path leading from the outside to the center of a usually circular or square space.
3. Something highly intricate or convoluted in character, composition, or construction: a labyrinth of rules and regulations.
4. Anatomy a. A group of complex interconnecting anatomical cavities.