Definitions:

1. to indicate roughly verb
   • We blocked out the scene for a couple minutes before filming.
2. to plan where and when songs should be inserted into a theatrical production, or plan a theatrical production in general verb
   • The director blocked out the company's next show.
3. to prevent from entering verb
   • The blinds block the strong sunlight out of the room.
4. to shield from light verb
   • I blocked out the sunlight with dark curtains.

Synonyms:

• bar
• mask