shibboleth [shib-uh-lith, ‐leth]
1. a peculiarity of pronunciation, behavior, mode of dress, etc., that distinguishes a particular class or set of persons.
2. a slogan; catchword.
3. a common saying or belief with little current meaning or truth.
Origin: < Hebrew shibbōleth literally, freshet, a word used by the Gileadites as a test to detect the fleeing Ephraimites, who could not pronounce the sound sh (Judges 12:4-6)
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