in·board | \ˈin-ˌbȯrd \

Definition of inboard 

(Entry 1 of 3)

1 : inside the line of a ship's bulwarks or hull

2 : toward the center line of a vehicle or craft (such as a ship or aircraft)



Definition of inboard (Entry 2 of 3)

1 : located inboard an inboard engine an inboard spoiler

2 of a boat : having an inboard engine



Definition of inboard (Entry 3 of 3)

: a boat with an inboard motor

Examples of inboard in a Sentence

Recent Examples on the Web: Adverb

The boat is a 27-foot offshore style sport boat, inboard/outboard with loud exhaust. Jc Reindl, Detroit Free Press, "Oakland County lakes see drowning, boat fire, watercraft collision," 28 May 2018 The crafts are classified as either outboard or inboard, depending on whether the engine is set. Hasan Dudar, Detroit Free Press, "Do they still float? Vintage racing boats come back to Detroit," 15 July 2017

Recent Examples on the Web: Adjective

The south inboard runway, which is primarily used for arrivals, is closed through May 11 for reconstruction. Carlos Lozano,, "LAX issues aircraft noise advisory while one of its runways is closed for maintenance," 4 Feb. 2018 Additionally there are Kruger flaps on the inboard section of the leading edge. John Cox, USA TODAY, "Ask the Captain: Can the 747 be saved?," 29 Oct. 2017 Up to 14 advanced safety features are now available, including an industry-first front center side-impact air bag, which deploys on the inboard side of the driver’s seat, adding a layer of protection between driver and front passenger. Emma Jayne Williams, star-telegram, "Chevrolet’s Traverse big crossover gets a complete makeover for 2018," 30 Sep. 2017 Another robot — this one supplied by Spanish engineering firm MTorres — will drill and fasten the rib posts and stiffeners to the spars — each of them 105 feet long, 6 feet wide at the inboard end and a foot wide at the outboard end. The Seattle Times,, "Boeing revs up robots for 777X in Everett, signals that a 797 awaits," 9 June 2017 Another Electroimpact robot will drill and fasten the rib posts and stiffeners to the spars — each of them 105 feet long, 6 feet wide at the inboard end and a foot wide at the outboard end. Dominic Gates, The Seattle Times, "Boeing revs up robots for 777X in Everett factory, signals that a 797 awaits," 7 June 2017 The four cars are missing inboard attachments and may not restrain an occupant in case of a crash. Lisa Marie Segarra, Fortune, "Ford Just Issued Another Recall for Over 400,000 Cars," 30 June 2017

Recent Examples on the Web: Noun

Our typical purchase was a 12-foot boat with a 10-horsepower inboard motor and a trailer, for $700 to $800. Bill Cummings,, "Dad taught me the art of negotiating when I was just a kid," 24 May 2018 Moving the driver inboard also creates a larger buffer between the driver and a front wheel during a small-overlap crash. Eric Tingwall, Car and Driver, "Driving from the Middle of the Car Is About to Make a Comeback: Here Are the Pros and Cons," 20 Feb. 2018 The 747 has inboard and outboard trailing edge flaps that consist of three panels. John Cox, USA TODAY, "Ask the Captain: Can the 747 be saved?," 29 Oct. 2017 The carbon-ceramic brakes also are mounted inboard to reduce unsprung weight. Clifford Atiyeh, Car and Driver, "McLaren Vision Gran Turismo Concept Car Uses Central Seating Position—with a Twist," 20 Sep. 2017 At normal ride height, the GT sits on a sophisticated inboard suspension with spring-and-damper sets, an arrangement typical of race cars. Dan Neil, WSJ, "2017 Ford GT: A $450,000 Road Rocket That’s Two Cars in One," 6 July 2017 Inboard: Soquel, three openings, including community marketing manager. Jondi Gumz, The Mercury News, "Tech companies search for talent in Santa Cruz, Amazon hiring," 9 June 2017 A standard preemptive safety assist (Mercedes calls it Pre-Safe Impulse Side) uses radar to detect an impending side impact and inflates the front seat’s outer bolster to push the passenger inboard, away from the door. Eric Stafford, Car and Driver, "2017 Mercedes-AMG E43," 21 June 2017 The boat was a Somes Sound 26, a replica of a Newport launch, 26 feet long with a 240-horsepower Chrysler inboard engine. Porter Fox, New York Times, "Everything Is Different on an Island," 17 May 2016

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


1830, in the meaning defined at sense 1


1847, in the meaning defined at sense 1


1939, in the meaning defined above

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The first known use of inboard was in 1830

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English Language Learners Definition of inboard

: located inside and towards the center of a boat, car, or airplane

Comments on inboard

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


exaggeratedly or childishly emotional

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