Uncle Sam
noun /ˌʌŋkl ˈsæm/
  /ˌʌŋkl ˈsæm/
(informal)- a way of referring to the United States of America or the US government (sometimes shown as a tall man with a white beard and a tall hat)
- He owed $20 000 in tax to Uncle Sam.
 
CultureUncle Sam wears red, white and blue clothes and has stars on his tall hat. He was probably named after 'Uncle' Sam Wilson (1766-1854), who examined army supplies for the US government during the War of 1812. During both world wars, a picture of Uncle Sam appeared on posters telling young men that they should join the armed forces.More Like This Expressions with people’s namesExpressions with people’s names- Aunt Sally
 - Hobson’s choice
 - Hooray Henry
 - Houdini
 - Jack the Lad
 - Jack Robinson
 - Jane Doe
 - Joe Bloggs
 - Joe Public
 - Joe Sixpack
 - John Bull
 - John Doe
 - John Hancock
 - Johnny Reb
 - PC Plod
 - Uncle Sam
 
Word Originearly 19th cent.: said (from the time of the first recorded instances) to have arisen as an expansion of the letters US.