- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
budorcas taxicolor
-
mush
-
novelist
-
gospel
-
proscribe
-
pogy
-
adalia bipunctata
-
spoon bread
-
spacesuit
-
stride
- Hide translation
acorn tube
acorn tube /ˈeɪˌkɔrn tuːb/
noun
-
A small vacuum tube; used at high frequencies
(
acorn tube
)
a small vacuum tube; used at high frequencies