Related Clues:

• Trellis plant
• Collegiate climber
• Gear up
• Wrigley stuff
• Type of school, briefly
• Attend Groton
• Get ready, briefly
• Get ready for the O.R.
• Vine
• Warm up, for short
• Scrub up, e.g.
• It's on some hallowed walls
• Clinging plant
• Attend Andover, perhaps
• Wall growth