C2 noun /ˈʃɪbəˌlɛθ/
shibboleth
выражение или вера, отличающие определённую группу людей
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.
Фраза стала политическим шибболетом во время кампании.