from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A male given name, also used as a pet form of John.
- n. Jack Daniel's, a brand of American whiskey.
- proper n. A sailor.
- proper n. a soldier
Popular pet form of John through a Middle English form Jankin; rarely also an anglicized form of French Jacques (equivalent of Jacob and James). Though the name was originally a pet form, it has become more of an independent name. (Wiktionary)
Short for Jack Tar. (Wiktionary)
Short for Jack Rum. (Wiktionary)