tubetub, tyub(n.; v.)tubed, tub•ing.

1. (n.)a hollow, usu. cylindrical body of metal, glass, rubber, etc., used esp. for conveying or containing liquids or gases.

2. a small collapsible cylinder of metal or plastic sealed at one end and having a capped opening at the other from which a semifluid substance, as paint or toothpaste, may be squeezed.

3. any hollow, cylindrical vessel or organ:

   the bronchial tubes.

   Category: Anatomy, Zoology

4. the elongated lower part of a united sepal or corolla of a flower.

   Category: Botany

5. Ref: inner tube.

6. Category: Electronics

   Ref: electron tube.

7. the tube, Informal. television.

   Category: Informal

8. a cylindrical garment without sleeves, pockets, or closures, usu. of stretch fabric, worn as a blouse, dress, skirt, etc.

   Category: Clothing

9. the tubular tunnel in which an underground railroad runs.

   Category: Transportation

10. the railroad itself.

    Category: Transportation

11. Brit.

    Category: British

    Ref: subway (def. 1). 1

12. Surfing. the curled hollow formed on the underside of a cresting wave.

    Category: Sport, Status (usage)

13. (v.t.)to furnish with a tube.

14. to convey or enclose in a tube.

15. to form into the shape of a tube; make tubular.

16. (v.i.)to float down a river on an inner tube.

Idioms for tube:

1. down the tube(s), into a wasted or abandoned state.

   Category: Idiom, Informal

Origin of tube:

1590–1600; < L tubus pipe

tube′like`(adj.)