Touchwood
Pronunciation : Touch"wood`
Part of Speech : n.
Etymology : [Probably for tachwood; OE. tache tinder (of uncertain origin) + wood.]
Definition : 1. Wood so decayed as to serve for tinder; spunk, or punk.
2. Dried fungi used as tinder; especially, the Polyporus igniarius.
Source : Webster's Unabridged Dictionary, 1913