59 MSB definitions

Mauritius Standards Bureau 
most significant bit 
Main Support Battalion 
Message Switch Buffer 
most significant byte 
Money Services Business 
Mathematics Sbornik 
Mutual Savings Bank 
Main Switch Board 
Mass Spectrometry Bulletin 
Mechanism Selection Box 
Mesocotyl Suppression Box 
minesweeping boat 
Most-Significant Bit 
My sexy bitch 
Macroscopic Shear Band 
Macroscopic Slip Band 
Main Supply Battalion 
Maintenance Steering Group 
Make Set Busy 
Manufacturer Specified Blocks 
Marginal Social Benefit 
Maritime Safety Board 
Maritime Subsidy Board 
Market Strategy Board 
Maryland School for the Blind 
Master of Science in Bacteriology 
Master of Science in Business 
Mauritius Standard Bureau 
McDonough School of Business