(1819–84), Scottish-born American detective. In 1850 he established the first American private detective agency.
Definition of Pinkerton, Allan in US English:
Pinkerton, Allan
proper nounˈpiNGkərtən
(1819–84), US detective, born in Scotland. In 1850, after having solved a series of train robberies, he established the first US private detective agency. He served as chief of the Union's secret service during the Civil War.