pop in

US /pɑp ɪn/
UK /pɑp ɪn/
"pop in" picture
1.

잠깐 들르다, 불쑥 나타나다

to visit briefly

:
I'll pop in to see you tomorrow.
내일 잠깐 들를게.
Feel free to pop in anytime.
언제든지 들러도 괜찮아.