a person who now preserves the interests that he or she previously attacked—UK, 19th century—but the notion occurred in Chaucer’s Physician’s Tale and ‘the greatest deer-stealers make the best park-keepers’ in The Church-History of Britain (1655)
Australia—‘charity dame’ 1949—‘charity moll’ 1962—an amateur prostitute who charges less than the usual rate—from ‘Moll’, pet form of the female forename ‘Mary’, the noun ‘moll’ has long been used to designate a prostitute
no money, nothing—UK, 1864, in a text by the British scholar D’Arcy Wentworth Thompson—from ‘n-’ in the determiner ‘no’, meaning ‘not any’, and ‘-uppence’ in ‘tuppence’
USA, 1978—to commit suicide; to demonstrate unquestioning obedience or loyalty—alludes to a mass suicide, in 1978, by members of the Peoples’ Temple in Jonestown, Guyana, who drank a cyanide-laced drink thought to be similar to Kool-Aid
USA, 1957—the rhythm method of birth control, as permitted by the Roman Catholic Church—with allusion to the unpredictable efficacy of this contraceptive method: from ‘Vatican’, denoting the authority of the Roman Catholic Church, and ‘Russian roulette’
meaning: ‘what is appropriate in one case is also appropriate in the other case in question’—earliest occurrence in A Collection of English Proverbs (1670), by John Ray
1793—probably ultimately after post-classical Latin ‘mille viae ducunt homines per saecula Romam…’ (‘a thousand roads lead for ever to Rome the men…’)—the metaphor occurred in A Treatise on the Astrolabe (ca 1391), by Geoffrey Chaucer