Related Clues:
- Projection of line down to border
- Place to dangle one's legs
- Mountaineer's rest stop
- Pigeon perch, perhaps
- One place for potted plants
- A sheet of glass
- Unfinished book shelf
- Shelf life began before the border
- Ridge or shelf
- Shelf life begins with slight advantage
- Books not right for shelf
- A step away from so-called gerrymandering
- Potted plant's place
- You may look through one
- Transparent piece