Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “backslash”


noun [C]     /ˈbækslæʃ/
IT the symbol \ that is used for separating words, letters, or numbers in the names of computer files: C:\Program files → Compare forward slash
(Definition of backslash noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of backslash

Definitions of “backslash” in other dictionaries

Word of the Day


willing to give money, help, kindness, etc., especially more than is usual or expected

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