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English definition of “block sth out”

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block sth out

phrasal verb with block
 
 
/blɒk/ verb [T]
NOT THINK to try to stop yourself thinking about something unpleasant: I've blocked out memories of the accident.Remembering, reminding and remindersForgetting and forgetfulness
LIGHT/NOISE to stop light or noise passing through something: Most sunscreens block out UVB radiation.Preventing and impedingLimiting and restrictingDarkness and becoming dark
(Definition of block sth out from the Cambridge Learners Dictionary © Cambridge University Press)
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