Related Clues:

• Word on some mazes
• Word from within?
• Inviting sign
• Put into a database
• Gain acceptance
• Ingress
• Data processing command
• Get in the game
• Long key
• Start, as school
• STEP IN
• With 19-Across, where to get on a freeway
• Put in, as into a log
• Big key
• Oft-used key