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."