Wiktionary
guv'nor
n. (context British English) An informal form of address; see '''guv'''. This version is especially likely to be applied to the owner of a business or the landlord of a public house.
Usage examples of "guv'nor".
I knew there wasn't a chance of my being able to work this stage wheeze in London without somebody getting on to it and tipping off the guv'nor, so I rather brainily sprang the scheme of popping over to Washington to broaden my mind.