1. A shady sitting place, usually in a park or garden, and usually surrounded by climbing shrubs or vines and other vegetation.
  2. A grove of trees.

Noun (etymology 2)

  1. An axis or shaft supporting a rotating part on a lathe.
  2. A bar for supporting cutting tools.
  3. A spindle of a wheel.

The above text is a snippet from Wiktionary: arbor
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