restart(noun, verb) noun1. The act of starting something again.- After the restart of my browser, the problem went away. verb1. start an engine again, for exampleDefinition categories: motion, start2. take up or begin anew- We resumed the negotiationsSimilar word(s): resumeDefinition categories: change, continue, preserve, upholdSentences with restart as a verb:- All attempts to restart the engine failed.