tube (n.)
- amplifier
- anode
- attenuator
- barrel
- base
- bole
- branch
- cask
- catheter
- cathode
- channel
- choo-choo
- column
- convertor
- cylinder
- damper
- detector
- discriminator
- doubler
- drainpipe
- drum
- el
- electric
- electrode
- elevated
- embankment
- express
- feeder
- filament
- flier
- flume
- freight
- freighter
- funicular
- funnel
- generator
- grid
- hose
- hosepipe
- iconoscope
- inverter
- junction
- kinescope
- limited
- limiter
- line
- local
- metro
- modulator
- monorail
- multiplier
- nipple
- oscillator
- photocathode
- pillar
- pipe
- pipeline
- pipette
- piping
- plate
- rail
- railroad
- railway
- rattler
- reed
- regulator
- repeater
- roadbed
- roadway
- roll
- roller
- rouleau
- shuttle
- siamese
- sidetrack
- siding
- siphon
- snorkel
- special
- standpipe
- stem
- straw
- streamliner
- subway
- tap
- terminal
- terminus
- track
- train
- tram
- tramline
- transducer
- trestle
- trunk
- tubing
- tubule
- turnout
- underground
- valve
