Tom and I shook hands, the rest of us exchanged a cool nod, and they trotted quickly down the drive, disappearing under the August foliage just as Gatsby, with hat and light overcoat in hand, came out the front door.
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.