A custom, principle, or belief distinguishing a particular class or group of people, especially a long-standing one regarded as outmoded or no longer important.
Mid 17th century: from Hebrew šibbōleṯ ‘ear of corn’, used as a test of nationality by its difficult pronunciation (Judg. 12:6).
“It’s time to leave our economic shibboleth behind and create a new future.”
Originally: a bald head; a bald-headed person. In later use also: a pitiable, lowly, or foolish person; a shabby or unkempt person. Frequently used without article, as though a proper name.
Early 16th century; earliest use found in John Skelton (c1460–1529), poet. In some forms apparently partly from pilled + garlic and partly from peeled + garlic; in some forms apparently partly from pill + garlic and partly from peel + garlic.