Fretwork
interlaced decorative design that is either carved in low relief on a solid background, or cut out with a fretsaw, jigsaw or scrollsaw
en-GB/ˈfɹɛtwɜːk/
en-US/ˈfɹɛtˌwɝk/
interlaced decorative design that is either carved in low relief on a solid background, or cut out with a fretsaw, jigsaw or scrollsaw