- To be inconsistent with, or go against, a constitution (a set of rules by which a country or state is run).
- A parliament that consists of one chamber, or house.
- unparliamentary language
- The use of language which the Speaker of the House of Representatives or the President of the Senate judges to be offensive or disorderly, and which usually needs to be withdrawn.
- upper house
- The name sometimes given to the Senate.
- urgency motion
- Debate on a matter in the Senate, usually regarding government actions or policies, followed by a vote on whether the matter is urgent.
- Usher of the Black Rod
- (see also Serjeant-at-Arms)
A parliamentary officer who assists the President of the Senate to maintain order and run the chamber, as well as providing services to senators.