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.
0.1 mrad. This is a discussion on 0.1 mrad within the Optics forums, part of the Gun Forum category; not sure the difference in 0.1 MRAD turret adjustments versus .25 MOA clicks, etc. Seems wih 0.1 it would take a whole lotta clicks to ...