(third-person singular simple present blocks out, present participle blocking out, simple past and past participle blocked out)
- to prevent from entering or penetrating
- High-factor suncream blocks out the sun's rays.
- (idiomatic) to prevent (a thought) from entering one's mind.
- After finding out she had terminal cancer, she tried to block out any thoughts of her own mortality.
- to cover something, so as to make it impossible to see.
- to begin to reduce to shape; to mark out roughly; to lay out.
- to block out a plan