Synonyms of tube

1. tube, tubing, conduit: usage: conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases
2. tube, vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve, electronic device: usage: electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope
3. pipe, tube, cylinder: usage: a hollow cylindrical shape
4. tube, tube-shaped structure, structure, anatomical structure, complex body part, bodily structure, body structure: usage: (anatomy) any hollow cylindrical body structure
5. metro, tube, underground, subway system, subway, railway, railroad, railroad line, railway line, railway system: usage: an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro' and in London it is called the `tube' or the `underground'"

1. tube, supply, provide, render, furnish: usage: provide with a tube or insert a tube into
2. tube, bring, convey, take: usage: convey in a tube; "inside Paris, they used to tube mail"
3. tube, ride: usage: ride or float on an inflated tube; "We tubed down the river on a hot summer day"
4. tube, envelop, enfold, enwrap, wrap, enclose: usage: place or enclose in a tube