English to English
verb
- give moral or psychological support, aid, or courage to
She supported him during the illness.
Her children always backed her up.
source: WordNet 3.0
- move backwards from a certain position
The bully had to back down.
source: WordNet 3.0
- establish as valid or genuine
Can you back up your claims?.
source: WordNet 3.0
- make a copy of (a computer file) especially for storage in another place as a security copy
You'd better back up these files!.
source: WordNet 3.0
- become or cause to become obstructed
The leaves clog our drains in the Fall.
The water pipe is backed up.
source: WordNet 3.0
