durmast definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of several European oaks valued for their heavy, tough wood
Origin: uncertain or unknown; perhaps for dun mast oak, dark acorned oak: see dun and amp; mast
durmast definition by American Heritage Dictionary
A European oak (Quercus petraea) having tough, elastic wood.
Origin: Perhaps alteration of dun mast : dun2 + mast2.