engraving designs on wood with hot poker
• (n.) The art or practice of burning pictures on wood with a hot iron; -- called also poker painting. See Poker picture, under Poker.
Xy`lo·py·rog'ra·phy noun [ Xylo- + Greek ..., ..., fire + -graphy .] The art or practice of burning pictures on wood with a hot iron; -- called also poker painting . See Poker picture , under Poker . 
Xylopyrography is the art of burning pictures on wood with a hot iron.