Related Clues:

• In-group lingo
• Some gangster-film dialogue, say
• Technical talk
• Insider idiom
• Patois, vernacular
• Slang, patois
• Language, colloquially speaking.
• Patois for groat
• Special language of a groat?
• Slang for a groat
• Father or mother
• Kind of insider slang, may be pretentious
• Slang for groat
• Words and expressions used within a particular group
• Special jargon of a group