plebiscitum
A law enacted by the plebs, under the superintendence of a tribune or some subordinate plebeian magistrate, without the senate's intervention.
Still worse went it with another individual; doomed, by extempore Plebiscitum, to the Lanterne; […]
Where it comes from
Learned borrowing from Latin plēbiscītum, plēbis scītum, plēbī scītum (“law of the common people or plebs”), from plēbis (the genitive singular of plēbs (“common people, plebeians”), ultimately from Proto-Indo-European *pleh₁- (“to fill”)) + scītum (“decree, ordinance, statute”) (from scīscō (“to ascertain; to know; to decree, enact, ordain”) (from sciō (“to know; to understand”), ultimately from Proto-Indo-European *skey- (“to dissect; to split”)) + -scō (suffix meaning ‘to begin [doing something]’)) + -tum (suffix forming action nouns from verbs)).
Adapted from the Wiktionary entry plebiscitum (CC BY-SA 4.0).