block out
Pronunciation:
verb
Definitions
To prevent from entering or penetrating.
Example: High-factor suncream blocks out the sun's rays.
To prevent (a thought) from entering one's mind.
Example: 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.
Example: to block out a plan