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inboard-outboard

American  
[in-bawrd-out-bawrd, in-bohrd-out-bohrd] / ˈɪnˌbɔrdˈaʊtˌbɔrd, ˈɪnˌboʊrdˈaʊtˌboʊrd /

adjective

  1. Also (of a motorboat) having an inboard engine connected to a maneuverable outboard drive-shaft unit.

noun

  1. an inboard-outboard motor.

  2. a boat equipped with such a motor. I/O

Etymology

Origin of inboard-outboard

First recorded in 1925–30

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.