Definition of Uncle Sam
1 : the U.S. government
2 : the American nation or people
Examples of uncle sam in a Sentence
Uncle Sam wants you to join the Army!
Origin and Etymology of uncle sam
expansion of U.S., abbreviation of United States
First Known Use: 1810See Words from the same year
UNCLE SAM Defined for English Language Learners
Definition of Uncle Sam for English Language Learners
: the American government, nation, or people pictured or thought of as a person
Seen and Heard
What made you want to look up Uncle Sam? Please tell us where you read or heard it (including the quote, if possible).