stake out
US /steɪk aʊt/
UK /steɪk aʊt/

1.
surveiller, épier
to watch a place or person secretly, especially in order to catch a criminal or to find information
:
•
The police decided to stake out the suspect's house.
La police a décidé de surveiller la maison du suspect.
•
They had to stake out the area for hours before anything happened.
Ils ont dû surveiller la zone pendant des heures avant que quelque chose ne se passe.