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Computer term: "Master Boot Record" Sector 0 of the hard drive. A set of instructions on the harddrive in ASM that launches the operating system somewhere else on the hard drive. MBR code is often changed in virusses to make the hard drive useless until a reformat.
Also Known As: "Boot Loader"
That virus infected my damn MBR!
MBR by Alex January 26, 2006
Related Words
MBR • mbri • mbrn • mbre • Mbrfn • mbriago • mbrin • mbrm • mbrockstar • MBRoI
he is such an MBR
MBR by xaxaxa March 20, 2010
A abreviation of ngr
A.Breh suck your mum usman
B. Mbr
mbr by USI-likes-fortnite January 23, 2022
an acronym that stands for “masturbation ritual”; it describes the act of pleasing yourself to the thought of someone else or pornographic imagery.
*thinks to self* Man, that MBR really wore me out last night!
MBR by KNICKSYN November 12, 2022
games like fortnite, call of duty blackout, apex legends, pubg, mobile knockoffs, all have the same ingame purchases in battle royal skins. Most people buy the skins like my friends and me we think we look cool but you just spend money on your moms debit card. Stands for multiplayer battle royale series of its ingame purchases.
My best friend is a mbrsgp on all games
mbrsgp by no body just a 69 fan February 21, 2019
Short for my bro
Person 1: yo can you drop a tin
Person 2: no worries i gotchu mbro
mbro by anonymous December 9, 2020
More from Urban Dictionary

briefcake 

"Did you check out the briefcake in courtroom C?"
briefcake by Ben Frey April 6, 2006
Word of the Day on November 3, 2026
Brought to public attention by Bob Woodward and Carl Bernstein in the book on the fall of Richard Nixon, All The President’s Men, ratfucker was Nixon’s term for a political operative who sows chaos among opponents; an agent provocateur. It is thought to have originated among campus political rivalries at USC, and seems to have some usage in the US military.
Along with Nixon’s other ratfuckers, Roger Stone caused fights at otherwise peaceful Democratic Party protests to generate a false narrative that the Democrats were violent and dangerous.
Ratfucker by Ricky Ramjet November 2, 2017
Word of the Day on November 2, 2026
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