Related Clues:

• Parlance
• Tough phrase for foreigners
• "Lose one's head" or "lose one's shirt"
• Speaking style
• "Under wraps" is one
• Hard-to-translate phrase
• ''One for the books,'' for one
• Translating challenge
• Linguistic quirk
• Go for broke, e.g.
• Language lesson
• ''Under the weather,'' for instance
• Screw the pooch, e.g.
• Local language, say
• Colloquial phrase