drop in
US /drɑːp ɪn/
UK /drɑːp ɪn/

1.
들르다, 방문하다
to pay a casual visit to someone without making a prior arrangement
:
•
Feel free to drop in anytime you're in the neighborhood.
근처에 오면 언제든지 편하게 들러.
•
I might drop in on my way home from work.
퇴근길에 들를 수도 있어.