Wiktionary(0.00 / 0 votes)Rate this definition: pus(Noun) A whitish-yellow or yellow substance composed primarily of dead white blood cells and dead pyogenic bacteria; normally found in regions of bacterial infection.
Memorial Day is a federal holiday in the United States for remembering the people who died while serving in the country's armed forces.
Memorial Day is observed annually on the last Monday of May, the holiday, Memorial Day originated as Decoration Day after the American Civil War in 1868.