Definition of act of parliament in English English dictionary
a law which has received assent (royal or presidential or gubernatorial) after having been passed by the houses (or house) of Parliament
A military term for small beer, five pints of which, by an act of parliament, a landlord was formerly obliged to give to each soldier gratis. (1811 Dictionary of Vulgar Tongue)
a law that has been officially accepted by a parliament, especially the British Parliament