# Vatican roulette

> English word · Noun

## Definitions
1. The rhythm method.

## Etymology
From the Catholic church's prohibitions on active methods of contraception, and its perceived lack of reliability. By analogy with Russian roulette.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/vatican-roulette