gherkin UK /ˈɡɜːkɪn/US /ˈɡɝkɪn/noun 3forms 1phrases 1 noun3 •A small cucumber, often pickled whole. •(UK, Ireland) Pickled cucumber regardless of size; a pickle •(slang) The penis.“Even my gherkin is sorry, and it didn't talk shit about anybody," persists Adrian. The edge of Titus's mouth quivers in laughter. — 2008 formsgherkins Phrases with gherkin jerkin the gherkinMasturbation.