[for a sheet of something] to bend back. The cloth folded back, revealing the faded upholstery below.The top page folded back, revealing a neatly typed manuscript.
to bend a sheet or flap of something back. She very carefully folded the page back to mark her place in the book.She folded back the page to mark her place in the book.The surgeon folded the flap of skin back, revealing the torn ligament.