Related Clues:

• Divining device
• Dowsing stick
• Retinal cell
• Dowsing tool
• Postmarked pieces
• Linear unit
• A-___
• Push the envelope?
• Post office delivery
• ''The Twilight Zone'' creator Serling
• ''Da Ya Think I'm Sexy?'' singer Stewart
• Piece of the hood?
• Fishing tool
• It's sometimes certified
• Garb for Galahad