1. motormouth - Noun
2. motormouth - Verb
someone who talks incessantly
Source: WordNetI love Nudge, Nudge is a great kid, but that motormouth of hers could have turned Mother Teresa into an ax murderer. James Patterson
I wish that motormouth would shut up Source: Internet
He made two albums of stand-up comedy, Motormouth (1987) and Motorvation (1988). Source: Internet