Arbor

Arbor – Noun

Definition:   a shelter of vines or branches or of latticework covered with climbing shrubs or vines.

Source : http://www.merriam-webster.com/dictionary/arbors

Found in :  The Yellow Wallpaper by Charlotte Perkins Gilman

Quote:  “I always fancy I see people walking in these numerous paths and arbors, but John has cautioned me not to give way to fancy in the least. (3rd page, last paragraph)

In this quote the narrator who is looking out of her window starts daydreaming about people walking along the vine paths and how her husband thinks daydreaming of that kind is not good for her.  I  understand that how her husband made her believe even to think about beautiful path ways are dangerous for her treatment.