Painful, sore, red gums can be a symptom of gingivitis (inflammation of the gums) or, more likely, periodontitis (inflammation of the attachment fibers of the teeth and supporting bone), which can arise due to a number of different causes.
klick (plural klicks) ( 1 slang, military) A kilometer. 2002, Robert J. Sawyer, Hominids an asteroid between one and three kilometers wide had slammed into the ground at fifteen klicks per second. ( 2 slang, usually in the plural) Kilometres per hour.
Quick Answer. A click, or klick to use the spelling generally utilized in the U.S. military, is equal to a distance of 1 kilometer, or .062 miles. According to About.com U.S. Military, this term came into widespread use during the Vietnam War. Continue Reading.