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.
Follow @TIME. Memorial Day marks the unofficial start of summer, conjuring images of picnics, barbecues or just a lazy day off. But originally the holiday was charged with deeper meaning â and with controversy. The exact origins of Memorial Day are disputed, with at least five towns claiming to have given birth to the holiday sometime near the end of the Civil War.