This was at one time a far more commonly used first name than it is at the present time. The frequency of its occurrence caused it to be used as a generic term for any man. It is still often used as a transferred name when addressing a stranger....

Jack may refer to: Jack (name), originally a nickname for John (including list of people with that name) Jack (device), a device used to lift heavy objects Jack (connector), an electrical connector Jack plug, a common audio connector Jack (playing...