Definition of decoration

• n. - The act of adorning, embellishing, or honoring; ornamentation.
• n. - That which adorns, enriches, or beautifies; something added by way of embellishment; ornament.
• n. - Specifically, any mark of honor to be worn upon the person, as a medal, cross, or ribbon of an order of knighthood, bestowed for services in war, great achievements in literature, art, etc.