Both Uses

arbor
in
Great Expectations
(Edited)

We left him bestirring himself to feed the fowls, and we sat down to our punch in the arbor; where Wemmick told me, as he smoked a pipe, that it had taken him a good many years to bring the property up to its present pitch of perfection.
p. 218.9 *

arbor = a framework that supports climbing plants; or a shady rest area made by such a framework or by trees and shrubs
At last, when we got to his place of business and he pulled out his key from his coat-collar, he looked as unconscious of his Walworth property as if the Castle and the drawbridge and the arbor and the lake and the fountain and the Aged, had all been blown into space together by the last discharge of the Stinger.
p. 220.9

Definitions:

(1) (arbor as in: shaded arbor)
a framework that supports climbing plants; or a shady rest area made by such a framework or by trees and shrubs

The framework of an arbor is generally thought of as a wood lattice made to support vines, but it can also be a natural framework such as trees.
(2) (meaning too rare to warrant focus)
Less commonly arbor can be used as a proper noun to reference a location such as Ann Arbor, Michigan. As a common noun, it can also reference various types of rotating machine shafts.