Meaning

noun a flat protective covering (on a door or wall etc) to prevent soiling by dirty fingers

noun (nautical) a plate on a ship's stern on which the name is inscribed

noun a shield; especially one displaying a coat of arms

originFrom Middle English scochon, from Anglo-Norman escuchon, Old French escusson (French écusson), ultimately from Latin scutum (“shield”). Related to scutum, scute, scudo, escudo, and écu.

Etymology from Wiktionary, CC BY-SA 3.0