Related Clues:

• Entry fee
• Means of entry
• Primary course
• Principal dish of a meal
• Middle course
• Hors d'oeuvre follower
• Duck à l'orange, e.g.
• Early bird special item
• Course between salad and dessert
• Letting-in or letting-on
• Entrance fee
• Principal course
• Something with one or more sides
• Passwords provide it
• The "A" in RAM