Related Clues:

• Challenge for a nonnative speaker
• 'Up the creek,' e.g.
• Special terms
• 'Talk turkey,' e.g.
• Dialect of a region
• Language quirk
• Specialized vocabulary
• Special vocabulary
• ''Going to the dogs,'' e.g.
• Hit the sack, e.g.
• ''Talk turkey,'' e.g.
• Cant
• Colorful phrase
• 'Hang your head,' for instance
• Figure of speech