pac·i·fi·er | \ˈpa-sə-ˌfī(-ə)r \

Definition of pacifier 

1 : one that pacifies

2 : a usually nipple-shaped device for babies to suck or bite on

Examples of pacifier in a Sentence

Recent Examples on the Web

Sure, not all babies are into pacifiers, and that's totally fine. Korin Miller, SELF, "Why Nicky Hilton Has a ‘Strict’ No Pacifier Rule for Her Daughters," 20 Apr. 2018 In years past, garbage removed has ranged from fireworks to glow sticks to underwear to cigarette butts to pacifiers. Joshua Emerson Smith,, "Surfrider, volunteers prepare for post-Fourth of July beach cleanup," 3 July 2018 Offer a pacifier without a cord or clip once breastfeeding has been established, generally by two to four weeks of age. Rebeca Kimsey Markovich, M.d., miamiherald, "Tips for keeping babies safe while they're sleeping," 2 July 2018 Avoid taking toys, pacifiers, cups, bottles, strollers or similar items into pig barns and show arenas. Emma Kate Fittes, Indianapolis Star, "Indiana resident catches rare form of flu following exposure to pigs at a county fair," 1 July 2018 In the infant business, Newell’s Graco, a major player in strollers, helped Jarden’s Nuk line of pacifiers and bottles gain entry into big retailers. Sharon Terlep, WSJ, "A Megadeal Joined Sharpie Markers and Crock-Pots. What Could Go Wrong? A Lot," 2 May 2018 From holding me correctly as a baby to whether or not to give me a pacifier. Charlie Coyne (age 2), Good Housekeeping, "An Ode to The Greatest Mom Who Has Ever Lived™," 11 May 2018 In the snap, baby Miles lays in a fuzzy bassinet while big sister Luna helps with his pacifier. Melissa Minton, Glamour, "Chrissy Teigen Just Shared the First Photo of Luna and Miles Together," 29 May 2018 In the picture, big sister Luna seems to be caring for her new brother by giving him a pacifier. Alex Warner, Marie Claire, "Chrissy Teigen Shared the Most Adorable First Photo of Luna and Baby Miles," 29 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pacifier.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of pacifier

1533, in the meaning defined at sense 1

Keep scrolling for more

Learn More about pacifier

Statistics for pacifier

Last Updated

6 Oct 2018

Look-up Popularity

Time Traveler for pacifier

The first known use of pacifier was in 1533

See more words from the same year

Keep scrolling for more

More Definitions for pacifier



English Language Learners Definition of pacifier

: a rubber object shaped like a nipple for babies to suck or bite on


pac·i·fi·er | \ˈpas-ə-ˌfī(-ə)r \

Medical Definition of pacifier 

1 : a usually nipple-shaped device for babies to suck or bite on

Keep scrolling for more

Comments on pacifier

What made you want to look up pacifier? Please tell us where you read or heard it (including the quote, if possible).


lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!