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World War I US Army recruitment poster by
James Montgomery Flagg
1. The government of the United States, often personified by a representation of a tall, thin man having a white beard and wearing a blue tailcoat, red-and-white-striped trousers, and a tall hat with a band of stars: "intent on giving states greater incentive to save both their dollars and Uncle Sam's" (New York Times).
2. The American nation or its people.
[From US, abbr. of United States.]
(Government, Politics & Diplomacy) a personification of the government of the United States
[C19: apparently a humorous interpretation of the letters stamped on army supply boxes during the War of 1812: US]
a personification of the government or people of the U.S.: represented as a tall, lean man with white chin whiskers, wearing a blue tailcoat, red-and-white-striped trousers, and a top hat with a band of stars.
[1805–15, Amer.; extension of the initials U.S.]
|Noun||1.||Uncle Sam - a personification of the United States government|