[in-bawrd, -bohrd]
  1. located nearer the longitudinal axis or center, as of an airplane: the inboard section of a wing.
  2. located inside a hull or aircraft: a motorboat with an inboard engine.
  3. (of a motorboat) having the motor inboard.
  1. inside or toward the longitudinal axis or center of a hull, aircraft, machine, etc.Compare outboard(def 4).
  1. an inboard motor.
  2. a boat equipped with an inboard motor.

Origin of inboard

First recorded in 1840–50; orig. phrase in board Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for inboard

Historical Examples of inboard

  • With great exertions, however, the spars and sails were saved, and got inboard.

    Sunshine Bill

    W H G Kingston

  • Around and around they flew, all inboard guns trained on the enemy.

  • At last Lambert got his friend on the edge, and tumbled him inboard.

    The Red Man's Revenge

    R.M. Ballantyne

  • If you only get the right sort, it is good for everything, inboard and outboard.

    Skipper Worse

    Alexander Lange Kielland

  • It was a lot worse when the boys reached me in the boat an hauled me inboard.

    Carolyn of the Corners

    Ruth Belmore Endicott

British Dictionary definitions for inboard


  1. (esp of a boat's motor or engine) situated within the hullCompare outboard (def. 1)
  2. situated between the wing tip of an aircraft and its fuselagean inboard engine
  1. towards the centre line of or within a vessel, aircraft, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012