noun
- a French Dominican friar: the Dominicans were established in a convent at the Church of St. Jacques in Paris
- any member of a society of radical democrats in France during the Revolution of 1789: their meetings were held in the Jacobin friars' convent
- an extreme political radical
Origin:
MFr < ML Jacobinus < LL(Ec) Jacobus: see jack
adjective
of the Jacobins or their policies