cou·​pler | \ ˈkə-p(ə-)lər How to pronounce coupler (audio) \

Definition of coupler

1 : one that couples
2 : a contrivance on a keyboard instrument by which keyboards or keys are connected to play together

Examples of coupler in a Sentence

Recent Examples on the Web

Further investigation showed that a third of the 104 couplers in Muni’s 52-vehicle fleet suffered some type of defect, ranging from scrapes to more substantial breakage. Rachel Swan,, "Muni completes safety fixes to new trains following series of mishaps," 26 June 2019 According to the mining company, the autonomous trains make sure the rails are clear ahead and monitor internal systems as well, checking for faulty wheels or couplers and bringing the train to a stop if there's a problem. Megan Geuss, Ars Technica, "Mining co. says first autonomous freight train network fully operational," 30 Dec. 2018 The light kicks move the BEC along in free space, while the microwave pulses act like couplers between different paths. Chris Lee, Ars Technica, "Wandering Bose-Einstein condensate may lead to scalable quantum computer," 29 Aug. 2018 Firefighters found his foot pinched three inches below the top of two couplers which link train cars together. Chris Mayhew,, "Boy rescued from Norfolk Southern train in Crescent Springs," 6 July 2018 Firefighters were dispatched at 5:29 p.m. Tuesday, July 3, to help a juvenile with his foot pinned between two steel couplers of a northbound Norfolk Southern train. Chris Mayhew,, "Boy rescued from Norfolk Southern train in Crescent Springs," 6 July 2018 More cars uncouple, and if critics are right, faulty new equipment may cause serious malfunctions of brakes, couplers, track signals, and switches. Christopher Bonanos, Daily Intelligencer, "The Subway Crisis We’ve Been Writing About for 48 Years," 17 Apr. 2018 During a fire, firefighters can connect a hose from a nearby hydrant to one or both couplers, boosting pressure and providing additional water to systems inside the building. Keith Williams, New York Times, "Those Dastardly Standpipe Spikes," 25 Jan. 2018 An automatic-parking aid will help line up to it, according to Fisker, and the design of the coupler allows some position flexibility. Bengt Halvorson, Car and Driver, "Fisker Aims for Charging Innovation and Solid-State Batteries—Not Dealerships or Assembly Plants," 20 Dec. 2017

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

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First Known Use of coupler

1552, in the meaning defined at sense 1

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Statistics for coupler

Last Updated

12 Jul 2019

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Time Traveler for coupler

The first known use of coupler was in 1552

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Comments on coupler

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


appealing forcibly to the mind or reason

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