1. 不再去想；刻意忘却
If you blank out a particular feeling or thought, you do not allow yourself to experience that feeling or to have that thought.

1. cut out, as for political reasons

e.g. several line in the report were blanked out

2. be unable to remember

e.g. I'm drawing a blank
You are blocking the name of your first wife!

Synonym: forgetblockdraw a blank