Related Clues:

• Lough ___ (Irish lake)
• Rowing machine unit
• Elder, e.g.
• See 17 Across
• Female ruff
• Riddle-me, riddle-me-___
• 0.1 microjoule
• Cuckoo announcement
• Pop/soul singer Des'--
• Zero ___
• Mr. __!: old detective game
• A bit of a joule
• Tiny fraction of a British thermal unit
• Chunk of time
• A little bit of work