Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “mailing tube”

mailing tube

noun [C]    
COMMUNICATIONS a long hollow cylinder , usually made of paper or cardboard , used to contain and protect large documents sent by mail : Each kit includes supplies to help students create original billboard designs , such as a mailing tube to submit completed entries .
(Definition of mailing tube noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of mailing tube

Word of the Day


relating to behaviour between people that is pleasant and friendly, often despite a difficult situation

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More