jigsaw

The word 'jigsaw' is a compound formed from two English words, 'jig' and 'saw'. It originated in the late 19th century, first naming a mechanical saw whose fine blade moved with a rapid, jerking (or "jigging") action, ideal for cutting intricate curves. The name for the puzzle emerged shortly after, derived from the tool. These puzzles were originally crafted by mounting printed pictures onto thin wood and cutting them into complex, interlocking shapes using the very same jigsaw. Thus, the modern meaning of the puzzle is a direct metaphorical extension from the tool used in its creation, linking the concept of rapid, precise cutting to the resulting fragmented picture.

Structure: jig (rapid movement) + saw (cutting tool) - jig: Origin uncertain, likely from Middle French giguer (to dance) or a Germanic source. In this compound, it conveys a sense of rapid, jerky, or repetitive up-and-down motion. - saw: From Old English saga, sagu, from a Germanic root meaning "to cut." It functions as the core noun denoting the cutting tool.