Parliament
Middle English: from Old French parlement ‘speaking’, from the verb parler .
wiktionary
From Middle English parlement, from Anglo-Norman parliament, parlement, parliment, and Middle French and Old French parlement(“ discussion, meeting, negotiation; assembly, council”), from parler(“to speak”) + -ment(“ -ment”, suffix forming nouns from verbs, usually indicating an action or state resulting from them) (from Latin -mentum). Compare Late Latin parlamentum, parliamentum(“discussion, meeting; council or court summoned by the monarch”), Italian parlamento and Sicilian parramentu.
etymonline
parliament (n.)
c. 1300, parlement, "consultation; formal conference, assembly," from Old French parlement (11c.), originally "a speaking, talk," from parler "to speak" (see parley (n.)); the spelling was altered c. 1400 to conform with Medieval Latin parliamentum.
Anglo-Latin parliamentum is attested from early 13c. The specific sense of "representative assembly of England or Ireland" (with capital P-) emerged by mid-14c. from the broader meaning "a conference of the secular and/or ecclesiastical aristocracy summoned by a monarch."
