Related Clues:

• Dose deliverer
• ''Red'' opening
• Allergenic opener
• Sticker, briefly
• Prefix with "red" or "structure"
• Farther down the page
• Booster shot shooter, e.g.
• Needle, informally
• Syringe, for short
• Structure starter?
• Prefix with "structure"
• Below (Pref.)
• RN's device
• "Red" lead-in
• Structural opening?