Related Clues:
- Pedigree listing
- Mother among mammals
- Barrier
- Mica, for one
- Mississippi River feature
- D, in some communications
- Triangular formation
- Grand Coulee, for one
- American alternative
- Classic British war film, "The ___ Busters"
- Reservoir's edge
- Beaver job
- Hydroelectric option
- Mica or Gardiner
- Land formation named for its usual shape