The meaning of the Acronym FU is...

FU is

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

More Meanings For FU:

• Forces Unknown
• Feedback Unit
• Fraction Unbound
• Finite Union
• Forecast Unit
• Frost Up
• Florida University
• Fordham University
• Furman University
• Forcible Union
• Future's Unpredictable
• Felix Unger
• Family Unit
• Food Unit
• Flows Unlimited

FU is also in:

• Astronomy
• Educational
• Electronics
• Famous
• General
• Housing
• Law
• Mathematics
• Meteorology
• Non-Profit Organizations
• Universities