- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
larger
-
feria
-
a.k.a.
-
budget deficit
-
russian
-
paroxysm
-
afghan
-
twenty-two
-
trillion
-
reef
- Hide translation
10-4
10-4 /tɛn fɔr/
interjection
-
(
)
[American]
Acknowledgment of message received
(
10-4
[American] , ten-four
[American] )
acknowledgment of message received