mainframe
nounUK /ˈmeɪnfreɪm/
US /ˈmeɪnfreɪm/
A mainframe is a very big, powerful computer that many people use at the same time.
The bank keeps all its customer records on a mainframe.
RELATED WORDS
OTHER MEANINGS
2. The main frame or structure of a machine or vehicle.
The bicycle's mainframe was made of strong steel.
3. The central processing unit of a large computer system.
Engineers upgraded the mainframe to handle more jobs.
4. A large computer system used by organizations for bulk data processing.
Airlines still rely on a mainframe to manage bookings.