(literally) A turn in a vehicle carried out by driving in a semicircle in order to travel in the opposite direction. / (figuratively) A reversal of policy; an about-face, a backflip.

To turn a vehicle in a semicircle so as to face the opposite direction. / (intransitive) To shift from one opinion or decision to its opposite.

Initialism of use and occupancy: an official authorization or permit to inhabit a building or dwelling, usually issued upon successful completion of a final building inspection after construction or renovation is complete. Also referred to as a certificate of occupancy or occupancy permit.

Abbreviation of back-up.

Clipping of Manchester United Football Club.

Shaped like the letter "U"; bent such that the two ends are parallel. / Having a cross-section similar in appearance to a broad U.

Alternative form of uey.

(euphemistic) An interjection in response to smelling an unpleasant scent; an exaggerated pronunciation of pew.

Abbreviation of uranium-235.

(military, nautical, historical) Any German submarine of the First or Second World War, or any Austro-Hungarian submarine of the First World War.