Meaning

noun a vessel (usually cylindrical) with a wide mouth and without handles

noun the quantity contained in a jar

noun a sudden jarring impact

originFrom earlier jar, jur, jarre, jurre, of uncertain origin. Possibly from earlier *char, *chur, *charre, *churre (now spelt chirr, churr (“to make a sound”); compare also nightjar and its variant nightchurr), from Middle English *chirren, *cherren, *churren (“to sound, cry, murmur, complain”), from Old English ċeorian (“to murmur, gripe, complain with just cause”), from Proto-West Germanic *karēn…

Etymology from Wiktionary, CC BY-SA 3.0