Skip to main content
Dictionary
Store
Blog
World
Help
Advertise
Chat
System Status
Information Collection Notice
Trademark Concerns
reCAPTCHA Privacy
Terms of Service
reCAPTCHA Terms
Privacy Policy
Accessibility
Report a Bug
Data Request
Contact Us
Security
DMCA
© 1999–2026 Urban Dictionary ®
Mugs
Tees
Hoodies
Pro Customization
Create unique products with your own words and definitions
Preview
Personalize Your Design
Your Word
Your Definition
Word that is mostly used in hacking code but could also be seen from the prospective of a sterotype from movies. Hacking, in this context, is breaking into a computer system. A mainframe is "a high-performance computer used for large-scale computing purposes". So, hacking the mainframe would be breaking into a supercomputer, essentially.
Text fits
Save
Cancel