The meaning of the Acronym FU is...

FU is

• Fire Unit
• First User
• Foul Up
• Fart Underwater (submarine sound)

More Meanings For FU:

• Fortran Unit
• File Upload
• Functional Unit
• Formerly Undesirable
• Forces Unknown
• Feedback Unit
• Fraction Unbound
• Finite Union
• Forecast Unit
• Frost Up
• Florida University
• Fordham University
• Furman University
• Fuck U
• Fuck Up

FU is also in:

• Adults
• Astronomy
• Chat
• Electronics
• General
• Mathematics
• Meteorology
• Networking
• Software
• Universities