1
general::
blot sth out
[ M ] SUN
1. to hide or block the light from something, especially the sun
• A dark cloud suddenly blotted out the sun., blot sth out
[ M ] MEMORY
2. to stop yourself, or to prevent you, thinking about something unpleasant
• Perhaps there are some memories so bad that you have to blot them out.
Cambridge-Phrasal Verbs