Sentence:  He also bought a huge square of pegboard for hanging up his tools , and <WSD>lumber</WSD> for his workbench , sandpaper and glue and assorted nails , levels and T squares and plumb lines and several gadgets that he had no idea how to use or what they were for . 
Meaning of the word marked with <WSD> tags:  the wood of trees cut and prepared for use as building material