Definition of "bugwood"

Horton and the others had hardly assimilated the lessons of Wilder when the Grundy County bugwood cutters struck. Bugwood, knotty crooks of trees which can be found in any cut-over forest, is unfit for sawing into lumber, but it was harvested for use om distilling wood alcohol

1975, Frank Adams, Myles Horton, Unearthing Seeds of Fire: The Idea of Highlander‎, page 37

Besides these two trees, which are the most general form of vegetation met with, may be found the briglow, bugwood, lapunya, lancewood, cork, box, and bloodwood, the last so named from its light red sap, which oozes in a thick stream

1904, Scottish Geographical Magazine‎, volume 20, page 578