Related Clues:
- Some characters building a terrace in opening
- Entryway, of a sort
- Way in or way out
- One of a coupe's pair
- Sports spectators that could be barred
- Part of the 36-Across where the 'Ninety-Five Theses' were posted
- Starting __
- Barrier to open and close
- Mode of entry
- Audible pace in passage
- Plane-boarding point
- Place for a mail slot, perhaps
- Entrance to a room
- Arctic Monkeys "Secret ___"
- Opening in the fence