I stopped short, among the thick foliage outside, for the moon was up now, though obscured; and I recognized the man whom I had once supposed to be a delusion of Mr. Dick’s, and had once encountered with my aunt in the streets of the city.
There are no more uses of "foliage" in the book.
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It’s difficult to spot the birds in the foliage.
I like to rest my eyes by periodically looking up from the computer and gazing out the window at the foliage.