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.
It's also a holiday set aside to honor those who lost their lives in the service of their country. The origins of Memorial Day are in the years after the Civil War when the graves of Union and Confederate soldiers were adorned with flowers, flags and wreaths in what became known as Decoration Day.