- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
counsel
-
absorption unit
-
abelia
-
alike
-
acer saccharinum
-
refinement
-
absorbing
-
admonishment
-
execution
-
cebion
- 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)