eldest of father's younger brothers; uncle (term used to address a man about the age of one's father)

uncle; father's younger brother; husband's younger brother; Taiwan pr. [shu2]

Uncle Sam

father's brother (uncle); husband's brother (brother-in-law)

(polite) my uncle (father's younger brother)

husband's younger brother; brother-in-law

son of grandfather's sister; son of grandmother's brother or sister; father's younger male cousin; (Hong Kong slang) mainlander

nickname of Korean singer PSY

queer uncle, referring to a young to middle-aged male pedophile (Internet slang)

(slang) police officer

Ronald McDonald