The Collaborative International Dictionary of English v.0.48:

Mazy \Ma"zy\, a. [From Maze.]
   Perplexed with turns and windings; winding; intricate;
   confusing; perplexing; embarrassing; as, mazy error.
   --Milton.
   [1913 Webster]

         To range amid the mazy thicket.          --Spenser.
   [1913 Webster]

         To run the ring, and trace the mazy round. --Dryden.
   [1913 Webster]

WordNet (r) 3.0 (2006):

mazy
    adj 1: resembling a labyrinth in form or complexity; "a
           labyrinthine network of tortuous footpaths" [syn:
           labyrinthine, labyrinthian, mazy]