C2 noun /ˈʃɪbəˌlɛθ/
shibboleth
expresión o creencia distintiva de un grupo particular
Meaning
A custom, phrase, or belief distinguishing a particular group of people, often used to identify outsiders.
Example
The phrase became a political shibboleth during the campaign.
La frase se convirtió en un shibboleth político durante la campaña.