- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
czech
-
come up to
-
pugnaciousness
-
go apeshit
-
rift
-
conditioner
-
acidulent
-
cirripedes
-
luxury
-
diameter
- 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