Related Clues:

• Introduce chips but no fish
• Key to get in
• Log cabin's first from American heartland
• Tenant's not the first to come in
• Penetrate the middle of America? Not at first
• Record made in secret never turned up
• Some Aberdeen terriers put down
• Key buried by Aberdeen terrier
• Answer to one knocking perhaps — a key
• Wide key
• Verbal invitation
• Key key?
• Sign on many doors
• Reply to knocking
• Log in