The Collaborative International Dictionary of English v.0.48:

Pichiciago \Pi`chi*ci*a"go\, n. [Native name.] (Zool.)
   A small, burrowing, South American edentate (Chlamyphorus
   truncatus), allied to the armadillos. The shell is attached
   only along the back. [Written also pichyciego.]
   [1913 Webster]