tube
tube
noun
The underground railway system serving London, England.
"Let's take the Tube to the museum."
noun
A soft, squeezable container for paste-like substances.
"Please pass me the tube of toothpaste."
noun
A long, hollow cylinder, often for conveying liquids or gases.
"Water flows through the plastic tube."
Thesaurus
Synonyms: thermionic vacuum tube, thermionic valve, thermionic tube, vacuum tube, electron tube, tubing, pipe, metro, subway, subway system, underground, tube-shaped structure