in·​ter·​lock | \ ˌin-tər-ˈläk How to pronounce interlock (audio) \
interlocked; interlocking; interlocks

Definition of interlock

 (Entry 1 of 2)

intransitive verb

: to become locked together or interconnected

transitive verb

1 : to lock together : unite
2 : to connect so that the motion or operation of any part is constrained by another


in·​ter·​lock | \ ˈin-tər-ˌläk How to pronounce interlock (audio) \

Definition of interlock (Entry 2 of 2)

1 : the quality, state, sense, or an instance of being interlocked
2 : an arrangement in which the operation of one part or mechanism automatically brings about or prevents the operation of another a safety interlock
3a : a stretchable fabric made on a circular knitting machine and consisting of two ribbed fabrics joined by interlocking
b : a garment made of interlock

Examples of interlock in a Sentence

Verb She interlocked her fingers with his.
Recent Examples on the Web: Verb When eagles undergo a courtship dance in the air, the birds will interlock talons and plummet towards the Earth before separating right at the last second and flying away, Slusher tells NPR. Elizabeth Gamillo, Smithsonian Magazine, 15 Nov. 2021 Outside the home has not one but three pools that interlock with one another. Helena Madden, Robb Report, 19 Nov. 2021 Place the item flush against the wall, slightly above the wall cleat, and slide it down to interlock the two cleats. Kelly Allen, House Beautiful, 22 July 2021 The dispatcher told me to interlock my hands—one atop the other, at the midpoint of the nipple line—and get ready to start pumping up and down, hard and fast. Brian Anderson, The Atlantic, 26 Feb. 2021 The Cardinals interlocked their arms with members of the military during the anthem. Scooby Axson,, 27 Sep. 2017 Recent Examples on the Web: Noun Rookhuyzen said Bartels was currently required to use an interlock ignition device while driving, but did not have one installed in the vehicle that crashed. oregonlive, 31 Dec. 2021 The Tide crown interlock quarter zip from Peter Millar and Horn Legend runs for $155. Ben Flanagan |, al, 3 Dec. 2021 The bill also gives priority to states that have distracted driving laws and states with alcohol-ignition interlock laws for those convicted of drunk driving. Liz Farmer, Forbes, 12 Nov. 2021 He also is charged with misdemeanor counts of reckless driving, failing to stop, having an open container in his vehicle and operating it without an ignition interlock system he was required to have. Kolbie Peterson, The Salt Lake Tribune, 6 Nov. 2021 Achieving and maintaining ever-changing product-market fit by creating a seamless interlock between buyers, the field and product. Matt Darrow, Forbes, 13 Oct. 2021 Her compositions may appear to be explosions of furious emotion, but expressive passages all interlock like artful rhymes. Jonathon Keats, Forbes, 7 Oct. 2021 The researchers constructed it from hollow octahedral subunits that interlock but are able to move against one another. Lars Fischer, Scientific American, 20 Aug. 2021 Once that’s up, an interlock device will be installed in his car. Zoe Haylock, Vulture, 19 Aug. 2021

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


1632, in the meaning defined at intransitive sense


1874, in the meaning defined at sense 1

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Time Traveler for interlock

Time Traveler

The first known use of interlock was in 1632

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Dictionary Entries Near interlock



interlocked grain

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Statistics for interlock

Last Updated

23 Dec 2021

Cite this Entry

“Interlock.” Dictionary, Merriam-Webster, Accessed 24 Jan. 2022.

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More Definitions for interlock



English Language Learners Definition of interlock

: to connect or lock (two or more things) together


in·​ter·​lock | \ ˌin-tər-ˈläk How to pronounce interlock (audio) \
interlocked; interlocking

Kids Definition of interlock

: to connect or lock together … she sat bowed, with her dirt-caked fingers idly interlocked in her lap …— Mark Twain, A Connecticut Yankee in King Arthur's Court


intransitive verb
in·​ter·​lock | \ ˌin-tər-ˈläk How to pronounce interlock (audio) \

Legal Definition of interlock

: to be or become mutually connected also : to be consistent in regard to major elements confessions that interlock

More from Merriam-Webster on interlock

Thesaurus: All synonyms and antonyms for interlock

Nglish: Translation of interlock for Spanish Speakers


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