mill around
US /mɪl əˈraʊnd/
UK /mɪl əˈraʊnd/

1.
andar à toa, circular
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.
Os alunos começaram a andar à toa no corredor depois que a campainha tocou.
•
Tourists often mill around the famous landmarks, taking photos.
Turistas frequentemente circulam pelos pontos turísticos famosos, tirando fotos.