1a complicated irregular network of passages or paths in which it is difficult to find one’s way; a maze:you lose yourself in a labyrinth of little streets
an intricate and confusing arrangement:a labyrinth of conflicting laws and regulations
2 Anatomy a complex structure in the inner ear which contains the organs of hearing and balance. It consists of bony cavities (the bony labyrinth) filled with fluid and lined with sensitive membranes (the membranous labyrinth).
Zoology an accessory respiratory organ of certain fish.