What is the Meaning of BACK UP?
If something backs up, it means the regular flow is slowed or stopped.
Don’t pour grease down your kitchen drain or the water will back up.
Every day the traffic on the freeway starts to back up at 4:00 p.m.
back up s.o./s.t.
back s.o./s.t. up
to drive, or move, in reverse
Could you please back your car up a little?
Note: For this definition, it is not always necessary to include the object (e.g., the car).
Could you back up a little? (This means back yourself up.)
They had no scientific evidence to back up their claims.
My boss doesn’t believe me. I am glad that Cris will back me up.
to make a second copy of computer information and store it in a separate place, so the information is safe if there are problems with your computer
We back up all our data every Friday.
My computer got a virus and everything on my hard drive was destroyed. Fortunately, I had been regularly backing everything up.
|present participle:||BACKING UP|
|past participle:||BACKED UP|