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 originated after the American Civil War to honor both the Union and Confederate soldiers who died in the war. The holiday was extended by the 20th century to include all American soldiers. Memorial Day is formally known as Decoration Day. This day is not to be confused with Veteran's Day which celebrates the service of all United States military veterans.