Definition of motherboard in English English dictionary
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
In a computer, the motherboard is the main electronic circuit board to which the microchips that perform important functions are attached. a board where all the circuits of a computer are placed
{i} main board of a computer where the memory processor and expansion cards are located (Computers)