Related Clues:

• See 4 Down
• "In" place?
• Peephole's place
• Passwords provide it
• It's implicit in knock-knock jokes
• Way through a fence
• Spot for a mail slot
• The "A" in RAM
• It may be French or Venetian
• Part of a slalom run
• Right of entry
• Way of entering
• Entrance to a Dublin theatre
• Way in, approach
• Right or means of entry