\ ˈfäb How to pronounce fob (audio) \

Definition of fob

 (Entry 1 of 3)

2 : a short strap, ribbon, or chain attached especially to a pocket watch
3 : an ornament attached to a fob chain
4 or key fob : an object attached to a key chain or key ring especially : a small electronic device used typically in place of a key (as to unlock a door or start a vehicle) or to remotely initiate the action of another device (such as a garage door) Wireless systems are triggered by pressing a button on a remote fob much like those used for car alarms. — Max Alexander The remote-start key fob has a range of several hundred feet, allowing you to start the car's engine from inside your home. Consumer Reports


fobbed; fobbing

Definition of fob (Entry 2 of 3)

Definition of FOB (Entry 3 of 3)

free on board

Examples of fob in a Sentence

Recent Examples on the Web: Noun Blind-spot warning and rear cross-traffic alert Trailer light check enables the driver, using the key fob, to verify that running lights, turn signals and brake lights are operating as intended. Jeff Yip, Houston Chronicle, "Newest Nissan Titan XD could be 'King' of versatility," 3 Nov. 2017 The vehicle had an electronic key fob inside the unlocked vehicle, which allowed the suspect to start the car. Brittany Seemuth, Milwaukee Journal Sentinel, "Menomonee Falls-Germantown police reports: Germantown driver nearly collides with train," 17 Oct. 2017 The power liftgate has a programmable height setting and can be opened one of three ways; a button on the key fob, a button inside the vehicle, or a touch pad on the lower edge of the liftgate. Emma Jayne Williams, star-telegram, "Chevrolet’s Traverse big crossover gets a complete makeover for 2018," 30 Sep. 2017 Grand Theft Auto 8800 block of Miralago Way in Parkland, Sept. 5, 8:07 a.m. People entered two unlocked vehicles in the driveway and rummaged through them and stole a 2011 Jaguar XJL with the key fob left inside., "Coral Springs Area Crime Log: Aug. 27 - Sept. 5," 17 Oct. 2017 BURGLARY Keys attached to a key fob and lanyard were reportedly stolen between Sept. 9 and 10 from a vehicle parked in the 6400 block of Spaulding Avenue. Chicago Tribune,, "Police: Bolingbrook woman charged with drug possession following traffic stop," 18 Sep. 2017 Ed Bilinkas offered the jury his theory of how the key fob may have been broken. Erin Moriarty, CBS News, "Kill or be killed? Ex-teacher shoots, kills ex-NYPD officer in her home," 7 Oct. 2017 View 105 Photos Active Key-Fob Commands For Rams equipped with the air suspension, holding down a button on the key fob will lower the truck for easier entry. Eric Stafford, Car and Driver, "2018 Ram 1500," 13 Sep. 2017 Residents open the door with an electronic key fob. Vic Ryckaert, Indianapolis Star, "Suspect in custody in connection to killing of woman in Downtown apartment's fitness center," 13 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fob.' 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 fob


1630, in the meaning defined at sense 1


14th century, in the meaning defined above

History and Etymology for fob


perhaps akin to German dialect Fuppe pocket


Middle English fobben

Keep scrolling for more

Learn More about fob

Time Traveler for fob

Time Traveler

The first known use of fob was in the 14th century

See more words from the same century

Statistics for fob

Cite this Entry

“Fob.” Dictionary, Merriam-Webster, Accessed 20 Oct. 2020.

Keep scrolling for more

More Definitions for fob


How to pronounce FOB (audio)

English Language Learners Definition of fob

: a short chain attached especially to a pocket watch
: a small object that is a decoration on a watch chain or a key ring

Legal Definition of F.O.B.

free on board

Comments on fob

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


Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

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!