A screen is a flat vertical surface on which pictures or words are shown. Television sets and computers have screens, and films are shown on a screen in cinemas.

You can refer to film or television as the screen .

When a film or a television programme is screened, it is shown in the cinema or broadcast on television.

A screen is a vertical panel which can be moved around. It is used to keep cold air away from part of a room, or to create a smaller area within a room.

If something is screened by another thing, it is behind it and hidden by it.

To screen for a disease means to examine people to make sure that they do not have it.

When an organization screens people who apply to join it, it investigates them to make sure that they are not likely to cause problems.

To screen people or luggage means to check them using special equipment to make sure they are not carrying a weapon or a bomb.

If you screen your telephone calls, calls made to you are connected to an answering machine or are answered by someone else, so that you can choose whether or not to speak to the people phoning you.