K, n. A consonant; originally precisely that of our H, but altered to its present shape to commemorate the destruction of [one of two lofty columns in] the great temple of Jarute.
Source: The Devil's Dictionary, 1911.
-- Ambrose Bierce, (Jun 24 1842-1914), US journalist, short-story writer; He was a noted wit, satirist and sardonic short story writer who disappeared while covering the Mexican revolution.