Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “pacifier”


noun [C]  /ˈpæs·əˌfɑɪ·ər/ us  
a rubber or plastic object with a part that sticks out like a nipple and that is given to a baby to suck, usually to calm the baby
(Definition of pacifier from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of pacifier?
Add Cambridge dictionaries to your browser to your website

Definitions of “pacifier” in other dictionaries

Word of the Day


an alcoholic drink made from apples

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