Mainframe - Definition

n 1: a large digital computer serving 100-400 users and
occupying a special air-conditioned room [syn: mainframe,
mainframe computer]
2: (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" [syn: central processing unit,
CPU, C.P.U., central processor, processor,
mainframe]