(UK, slang) A condom. / (New Zealand, derogatory) An inexperienced new worker, usually an immigrant. / A hospital gown: a gown with a back opening closed with snaps or ties, worn by hospital patients.

(informal) Used generically for a man whose actual name may not be known. / (informal) Used frequently to form an idea personified, as in John Bull, John Barleycorn (see derivations below).

(UK, military, slang) A new recruit at Royal Military Academy Sandhurst. / (US, slang, archaic) Alternative letter-case form of john: a toilet, lavatory, outhouse, or chamber pot.

A surname from Swedish.

a personification of alcoholic drink, particularly beer and whisky.

(idiomatic, also attributive) A newcomer; a novice; an upstart.

(idiomatic, US) A person's signature.

(transitive) To sign; to write one's signature on (something).

(historical) A former Portuguese gold coin.

A male given name from Hebrew.