spick-and-span (adj.)

also spic-and-span, 1660s, from spick-and-span-new (1570s), literally "new as a recently made spike and chip of wood," from spick "nail" (see spike (n.1)) + span-new "very new" (c. 1300), from Old Norse span-nyr, from spann "chip" (see spoon (n.)) + nyr "new." Imitation of Dutch spiksplinter nieuw "spike-splinter new."