Reference meaning
back up
Last updated
give moral or psychological support, aid, or courage to
Related source terms
Other meanings
2. verb
move backwards from a certain position
3. verb
establish as valid or genuine
4. verb
make a copy of (a computer file) especially for storage in another place as a security copy
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 02556126-v, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.