- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
olden
-
abidance
-
acid test
-
manduca quinquemaculata
-
dear
-
killer
-
one
-
actinian
-
rale
-
noxious
- Hide translation
acoustic buoy
acoustic buoy /əˈkuːstɪk buːi/
noun
-
A buoy that can be heard (at night)
(
acoustic buoy
)
a buoy that can be heard (at night)