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motherboard

[muhth -er-bawrd, -bohrd] /ˈmʌð ərˌbɔrd, -ˌboʊrd/
noun, Computers.
1.
a rigid, slotted board upon which other boards that contain the basic circuitry of a computer or of a computer component can be mounted.
Compare board (def 14).
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for mother board

motherboard

/ˈmʌðəˌbɔːd/
noun
1.
(in an electronic system) a printed circuit board through which signals between all other boards are routed
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
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mother board in Science
motherboard
  (mŭ'ər-bôrd')   
The main circuit board of a computer, usually containing the central processing unit and main system memory as well as circuitry that controls the disk drives, keyboard, monitor, and other peripheral devices.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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11
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