(government) The lowerlegislativehouse in abicamerallegislature; in many cases, the one that is directly elected and/or has more practical power, such as the power to raise and spend money.
2019 February 8, Helen Regan, Kocha Olarn, “This princess could be the next prime minister of Thailand”, inCNN International Edition[1], Cable News Network, retrieved2019-02-08:
In March, Thais will vote for the 500-seatlower house of parliament. But the 250-member upper house, or Senate, will be chosen entirely by the military.