- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
syllabus
-
dark
-
adenosine deaminase
-
ghost
-
taper
-
aaron
-
abstinent
-
literally
-
acidophilus milk
-
inutile
- 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