gunkholePronunciation: /ˈgʌŋkhəʊl/ North American informalDefinition of gunkhole noun a shallow inlet or cove that is difficult or dangerous to navigate. verb [no object, with adverbial of direction] cruise in and out of gunkholes: they were gunkholing through the coral archipelagoOrigin: early 20th century: of unknown origingunkhole in other Oxford dictionaries Definition of gunkhole in the US English dictionary