shibboleth

A shibboleth is any custom or tradition, usually a choice of phrasing or even a single word, that distinguishes one group of people from another. Shibboleths have been used throughout history in many societies as passwords, simple ways of self-identification, signaling loyalty and affinity, maintaining traditional segregation, or protecting from real or perceived threats. Origin The term originates from the Hebrew word, which means the part of a plant containing grain, such as the ear of a stalk of wheat or rye; or less commonly (but arguably more appropriately) "flood, torrent". The modern use derives from an account in the Hebrew Bible, in which pronunciation of this word was used to distinguish Ephraimites, whose dialect used a different first consonant. The difference concerns the Hebrew letter shin, which is now pronounced as (as in shoe). In the Book of Judges, chapter 12, after the inhabitants of Gilead under the command of Jephthah inflicted a military defeat upon the invading tribe of Ephraim (around 1370–1070 BC), the surviving Ephraimites tried to cross the River Jordan back into their home territory, but the Gileadites secured the river's fords to stop them. To identify and kill these Ephraimites, the Gileadites told each suspected survivor to say the word shibboleth. The Ephraimite dialect resulted in a pronunciation that, to Gileadites, sounded like sibboleth. In Judges 12:5–6 in the King James Bible, the anecdote appears thus (with the word already in its current English spelling): Modern use In modern English, a shibboleth can have a sociological meaning, referring to any in-group word or phrase that can distinguish members from outsiders. It is also sometimes used in a broader sense to mean jargon, the proper use of which identifies speakers as members of a particular group or subculture.