The term Jigsaw is a type of PUZZLE consisting of interlocking pieces that when put together form a picture or design. It is also known as a jigsaw PUZZLE, and it is usually made up of several small pieces of cardboard or plastic that must be arranged in the correct order to complete the image. The term Jigsaw is derived from the tool used to cut the pieces, which is called a jigsaw. Jigsaw puzzles have been around since the 1700s and are still popular today.