legislature UK /ˈlɛd͡ʒɪsləˌt͡ʃʊə/US /ˈlɛd͡ʒɪˌsleɪt͡ʃɚ/ noun3 •A governmental body with the power to make, amend and repeal laws.The state legislature passed a new education bill.Members of the legislature debated late into the night. •(Canada) The legislative assembly of a province or territory, as opposed to the federal parliament. •(Canada) A legislative building. formslegislatures