means The hobby of arranging photographs, mementos, and decorative bits into a themed album to preserve memories.

from A modern compound of "scrapbook" plus the verbal "-ing," naming the activity. "Scrapbook" itself dates to the early 1800s, joining "scrap" — a small leftover piece, from Old Norse "skrap," meaning scraps or trifles — with "book." Originally these were blank books for pasting in clippings, pressed flowers, and odds and ends; turning the noun into a named pastime, "scrapbooking," is a much later flourish, largely a late-20th-century coinage as the craft industry boomed.