Definition of "improv"

improv

/ˈɪmpɹɑv/

noun
countable and uncountable, plural improvs
1. (informal) Improvisation.
2. (acting) A form of live entertainment characterized by improvisation and interaction with the audience.
verb
third-person singular simple present improvs, present participle improvving, simple past and past participle improvved
1. To perform improv.