'arbor' definitions:

Definition of 'arbor'

(from WordNet)
noun
Tree (as opposed to shrub)
noun
Any of various rotating shafts that serve as axes for larger rotating parts [syn: spindle, mandrel, mandril, arbor]
noun
A framework that supports climbing plants; "the arbor provided a shady resting place in the park" [syn: arbor, arbour, bower, pergola]

Synonyms of 'arbor'

From: Moby Thesaurus