The meaning of the Acronym BUM is...

BUM is

• Back Up Man

More Meanings For BUM:

• Bludging Unmotivated Male
• Bitchy Unisex Microorganisms
• Butt Ugly Martians
• Big Ugly Man
• Business Update Meeting
• Back Up Man
• Beatles Unlimited Magazine
• Butler, Missouri USA

BUM is also in:

• Adults
• Airport Codes
• General
• Law
• Media