Related Clues:

• Prof protector
• "Agreed!"
• Extremity
• Sentence part
• Length of time
• Amtrak stop (Abbr.)
• Word with jam or rap
• Term of office
• One of six in this clue
• Bus terminal: Abbr.
•     RR depot
• Brief B&O stop
• Professor plum?
• ''The sky's the ___''
• Where a train pulls in: Abbr.