If UFOs appear in a dream, they can refer to presentiments or to intuitive, creative thoughts. Journeys in UFOs or spaceships where the dreamer leaves the earth should, in contrast, be seen as warning signals. Images like this signify dangerous alienation from the realities of life. 

When the dreamer dreams of himself seeking refuge under a large umbrella, it signifies escapism, anxiety and a flight from the realities of life.

Uncle

To dream of ones Uncle means soon you will have news of a sad character.

It indicates how the dreamer is seen by his fellowmen or how he behaves towards the world around him. It also means influential friends are there to guide you.

Urinal

To dream of a urinal denotes disorder will predominate in your home.