Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “thumbnail”


noun [C] uk   /ˈθʌm.neɪl/ us  

thumbnail noun [C] (FINGER)

the nail on the thumbThe hand

thumbnail noun [C] (PICTURE)

a small picture of an image or page on a computer screenComputer concepts
(Definition of thumbnail from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of thumbnail?
Add Cambridge dictionaries to your browser to your website

More meanings of “thumbnail”

Definitions of “thumbnail” in other dictionaries

Translations of “thumbnail”

Word of the Day


When birds roost, they go somewhere to rest or sleep.

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