Related Clues:
- Black mineral in hole not something of interest
- Boring idea, to go unsteadily north
- 'A person who talks when you wish him to listen,' per Ambrose Bierce
- 'How boring'
- Saddening experience
- Homophone for 55-Down
- Prove tedious
- Carried — drill
- Drill needed when tidal wave occurs
- Put up with a pain in the neck
- Tedious chap
- Suffered from a tidal wave
- Open mouth wide
- Something boring to do when sleepy?
- Carried by a wave