Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “thumb”

thumb

noun [C]     /θʌm/
B1 the short, thick finger on the side of your hand that makes it possible to hold and pick things up easilyThe hand
(Definition of thumb noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of thumb

Definitions of “thumb” in other dictionaries

Word of the Day

beneficiary

a person or group who receives money, advantages, etc. as a result of something else

Word of the Day

Blog

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