tube

Definitions

1. 1noun

   A hollow cylinder, of any material, used for the conveyance of fluids, and for various other purposes; a pipe.

2. 2noun

   A telescope.

3. 3noun

   A vessel in animal bodies or plants, which conveys a fluid or other substance.

4. 4noun

   The narrow, hollow part of a gamopetalous corolla.

5. 5noun

   A priming tube, or friction primer. See under Priming Friction.

6. 6noun

   A small pipe forming part of the boiler, containing water and surrounded by flame or hot gases, or else surrounded by water and forming a flue for the gases to pass through.

7. 7noun

   A more or less cylindrical, and often spiral, case secreted or constructed by many annelids, crustaceans, insects, and other animals, for protection or concealment. See Illust. of Tubeworm.

8. 8noun

   One of the siphons of a bivalve mollusk.

9. 9transitive verb

   To furnish with a tube; as, to tube a well.

10. 10noun

    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'"

    Synonyms

    metrosubwayunderground
11. 11noun

    conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases

    Synonyms

    tubing
12. 12noun

    electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

13. 13noun

    (anatomy) any hollow cylindrical body structure

14. 14noun

    a hollow cylindrical shape

    Synonyms

    pipe
15. 15verb

    place or enclose in a tube

16. 16verb

    ride or float on an inflated tube

    "We tubed down the river on a hot summer day"

17. 17verb

    convey in a tube

    "inside Paris, they used to tube mail"

18. 18verb

    provide with a tube or insert a tube into