mill around

US /mɪl əˈraʊnd/
UK /mɪl əˈraʊnd/
"mill around" picture
1.

うろうろする, 群がる

to move around in a confused, disorganized manner, often in a group

:
The students began to mill around in the hallway after the bell rang.
ベルが鳴った後、生徒たちは廊下をうろうろし始めた
Tourists often mill around the famous landmarks, taking photos.
観光客はよく有名なランドマークの周りをうろうろして写真を撮る。