Definition of motherboard noun from the Oxford Advanced Learner's Dictionary

 

motherboard

 noun
noun
BrE BrE//ˈmʌðəbɔːd//
 
; NAmE NAmE//ˈmʌðərbɔːrd//
 
(computing) Computer hardware
 
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the main board of a computer, containing all the circuits See related entries: Computer hardware
See the Oxford Advanced American Dictionary entry: motherboard