1. a black man considered to be excessively obedient or servile to white people.offensiveNorth American
▪ a person regarded as betraying their cultural or social allegiance:offensiveNorth American"he called moderates Uncle Toms"
Word Originmid 19th century (first referring to an enslaved black man): from the name of the hero of Uncle Tom's Cabin (1852), an anti-slavery novel by the American writer Harriet Beecher Stowe.