1.
If you shut something or someone out, you prevent them from getting into a place, for example by closing the doors.
‘I shut him out of the bedroom,’ says Maureen...
I was set to ~ anyone else who came knocking.
PHRASAL VERB: V n P of n, V P n (not pron)
2.
If you ~ a thought or a feeling, you prevent yourself from thinking or feeling it.
I ~ the memory which was too painful to dwell on...
The figures represent such overwhelming human misery that the mind wants to shut it out.
= block out
PHRASAL VERB: V P n (not pron), V n P
3.
If you shut someone out of something, you prevent them from having anything to do with it.
She is very reclusive, to the point of shutting me out of her life...
She had effectively shut him out by refusing to listen.
PHRASAL VERB: V n P of n, V n P