Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “tube”

See all translations

tube

noun  /tub/ us  

tube noun (PIPE)

[C] a long, hollow cylinder of plastic, metal, rubber, or glass, used for moving or containing liquids or gases: a copper tube She lay in the hospital, tubes going in and out of her. [C] A tube is also one of the body’s hollow cylindrical structures that carries air or liquid: bronchial tubes

tube noun (CONTAINER)

[C] a cylindrical container made of soft metal or plastic which is closed at one end and has a small opening at the other, usually with a cover, and is used for holding thick liquids: a tube of toothpaste/ointment

tube noun (TELEVISION)

[U] infml television: What’s on the tube tonight?
(Definition of tube from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of tube?
Add Cambridge dictionaries to your browser to your website

More American English definitions for “tube”

Definitions of “tube” in other dictionaries

Word of the Day

illusion

an idea or belief that is not true

Word of the Day

Lies, lies, lies!

by Kate Woodford,
February 25, 2015
​​​ According to sociologists (=people who study the relationships between people living in groups), we are good at lying. As a species, we have developed a remarkable ability to deceive each other (= persuade each other that something false is true). Being able to say things that are not true can help with

Read More 

showrooming noun

February 23, 2015
the activity of examining a product in a physical store and then making the purchase with an online retailer Amazon’s new smartphone is specifically designed to make showrooming fast and easy.

Read More