This is the 14728th most frequent Korean word.
밀려와
"밀려와" means "to surge in" or "to come flooding in."
In this sentence, '밀려오는' refers to the waves naturally flowing or rushing toward the shore.
밀려오는 파도 소리가 마음을 평온하게 한다.
The sound of waves rushing in calms the mind.
Here, '밀려오는' describes the sudden influx of memories overwhelming the person's thoughts.
갑자기 밀려오는 추억들이 가슴을 울렸다.
Suddenly, the memories rushing in touched my heart deeply.
In this case, '밀려와서' metaphorically implies being carried or brought by time's passing.