motherboard

/ˈmʌðɚˌbɔɹd/

IPA: /M AH1 DH ER0 B AO0 R D/

noun
  1. 1

    The primary circuit board of a personal computer, containing the circuitry for the central processing unit, keyboard, mouse and monitor, together with slots for other devices.

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Source: https://en.wiktionary.org/wiki/motherboard