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
Note: For this definition, it is not always necessary to include the object (e.g., the car).
- Could you please back your car up a little?
- 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|