Source : Webster's Revised Unabridged Dictionary (1913)

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