Synonyms:
central_processing_unit, CPU, C.P.U., central_processor, processor, mainframe
Meaning: (computer science) the part of a computer (a microprocessor chip) that does most of the data processing; "the CPU and the memory form the central part of a computer to which the peripherals are attached"
Synonyms:
mainframe, mainframe_computer
Meaning: a large digital computer serving 100-400 users and occupying a special air-conditioned room