Meaning

noun a member of the radical movement that instituted the Reign of Terror during the French Revolution

originFrom Middle English Jacobin, from Old French jacobin, from Latin Jācōbīnus, from Latin Jācōbus (“James, Jacob, etc.”) + -īnus (“-ine: forming adjectives”), from Ancient Greek Ἰάκωβος (Iákōbos), from Biblical Hebrew יַעֲקֹב (Ya'akóv), q.v. In reference to the Dominican Order, from the proximity of their 1218 chapel and chapter house in Paris to the city's Porte Saint-Jacques, whose road formed an…

Etymology from Wiktionary, CC BY-SA 3.0