1 definition by bizurketurkey

\mm/ is simply an online synonym/abbreviation to represent history's crunchiest, grooviest, funniest bunch in the 21st century of rock n' roll - Umphrey's McGee. The two "slashes" encasing the two "m's" are simply representative of our pinkies, and each "m" a set of 3 knuckles. This is a symbol used at shows and as logos for the band, making a giant U ... Or if you look closer, a GIaNT rock n' roll hand gesture.