📒 an occasion at which you can see a film, a show, etc. before it is shown to the general public
📒 a description in a newspaper or a magazine that tells you about a film, a television programme, etc. before it is shown to the public
📒 a series of short scenes from a film or television programme, shown in advance to advertise it
📒 a chance to see what something will be like before it happens or is shown