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Noun: alder  ol-du(r)
  1. Wood of any of various alder trees; resistant to underwater rot; used for bridges etc
  2. North temperate shrubs or trees having toothed leaves and conelike fruit; bark is used in tanning and dyeing and the wood is rot-resistant
    - alder tree

Derived forms: alders

Type of: tree, wood

Part of: Alnus, genus Alnus

Encyclopedia: Alder, Ontario