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vacuum tube
vacuum tube
synonyms
thermionic valve
electron tube
tube
thermionic vacuum tube
thermionic tube
valve
nipple
lamp
reed
damper
nozzle
conduit
pipe
trap
tap
fitting
petcock
shutoff
light bulb
bibcock
bolt
floodgate
duct
hydrant
choke
stopcock
gate
jalousie
blowhole
spout
paddle
stop
channel
cover
spile
cock
throttle
safety valve
window
spigot
water tap
faucet
vent
vacuum tube
antonyms