boucherize

from The Century Dictionary.

• To impregnate (timber) with sulphate of copper as a preservative.
• To impregnate (timber) with any preservative liquid by means of capillary a bsorption in a still living tree.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb To impregnate with a preservative solution of copper sulphate, as timber, railroad ties, etc.