Related Clues:
- Foal's mom
- Beavers' construction
- Dental guard
- Dental string
- Sire's mate
- Water holder?
- It's sometimes between your teeth
- You progress down some waterways and get to this barrier...which bursts and capsizes your boat. See 70-across.
- Lake former
- Dentist's instruction, perhaps
- Lake maker
- Dental aid
- River barrier
- One way to dislodge some particles
- Dentist's advice or a hint to 20-Across, 51-Across, 11-Down and 29-Down