- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
pacify
-
accountant
-
wiles
-
dwelling house
-
lo
-
guide word
-
dystopia
-
danelaw
-
rabbit-eared bandicoot
-
evaporation
- 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