Source : Webster's Revised Unabridged Dictionary (1913)

Xylopyrography \Xy`lo*py*rog"ra*phy\ n. [Xylo- + Gr. ?, ?, fire
   + -graphy.]
   The art or practice of burning pictures on wood with a hot
   iron; -- called also {poker painting}. See {Poker picture},
   under {Poker}.