Blues

Etymology
In reference to the ancient Roman and medieval Byzantine racing faction, a calque of or   and.

Proper noun

 * 1)  Any of several sports teams whose uniform is predominantly blue, such as:
 * 2)  The chariot-racing faction of the Roman circus and Constantinopolitan hippodrome that wore blue.
 * 3) * 2002,, The Age of Justinian..., p. 38:
 * 'Constantinople adopted the follies, though not the virtues of ancient Rome,' wrote, 'and the same factions which had agitated the circus raged with redoubled fury in the Hippodrome.' Gibbon's judgment was that what produced the 'redoubled fury' in the Hippodrome was senseless hooliganism, and even though the Blues and Greens could be politicized upon occasion, they had no coherent aims, religious or political. Gibbon's successors had alternative suggestions, the most persistent of which has been that the Blues were supporters of religious orthodoxy and the Greens of Monophysitism.
 * 1)  Carlton Football Club.
 * 2)  New South Wales.
 * 3)  Birmingham City FC.
 * 4)  Everton FC.
 * 5)  Chelsea FC.
 * 6)  Manchester City FC.

Etymology
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Noun

 * 1) blues (musical form)