arbor

noun

1. tree (as opposed to shrub)

   noun.plant

   Source: WordNet 3.0

2. any of various rotating shafts that serve as axes for larger rotating parts

   noun.artifact

   Synonyms mandrel mandril spindle

   Source: WordNet 3.0

3. a framework that supports climbing plants

   noun.artifact

   Examples

   The arbor provided a shady resting place in the park.

   Synonyms arbour bower pergola

   Source: WordNet 3.0

4. A kind of latticework formed of, or covered with, vines, branches of trees, or other plants, for shade; a bower.

   noun

   Source: webster1913

5. A tree, as distinguished from a shrub.

   noun

   Source: webster1913