What does MUM stand for?

What does MUM mean?

MUM	Caledonia - Mumford Governmental » State & Local
MUM	Crisanthemum Academic & Science » Universities
MUM	Maharishi University of Management Academic & Science » Universities
MUM	Maintenance of Union Membership Community » Unions
MUM	Mass Memory Unit Manager Governmental » NASA
MUM	Maternity Unit Miracles Miscellaneous » Unclassified
MUM	Mathematical Ulterior Motives Community » Educational
MUM	Merge Using Moments Miscellaneous » Unclassified
MUM	Mixed Up Mother Business » Positions
MUM	Modularization Unitization And Metrication Governmental » US Government
MUM	Money Under Management Business » Accounting
MUM	Mother Internet » Chat
MUM	Mount Magnet South NL Business » ASX Symbols
MUM	Multi Universe Moo Miscellaneous » Unclassified
MUM	Mumias, Kenya Regional » Airport Codes
MuM	Murder under the Microscope Governmental » Police
MuM	Murder under the Microscope Governmental » FBI Files
MUM	My Ultimate Mentor Miscellaneous » Unclassified
MUM	Quiet Internet » Chat