- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
pondering
-
swell
-
regeneration
-
remedial
-
abridgement
-
finn
-
unstintingly
-
firmly
-
guinea pig
-
annular eclipse
- Hide translation
surveillance
surveillance /sɝˈveɪləns/
noun
-
(
)
Close observation of a person or group (usually by the police)
(
surveillance
)
close observation of a person or group (usually by the police)