Possible Clues:

• Kind of indoor bowling like skittles
• Turning, hurry to catch what's at the end of the alley?
• Bowler's back-row target
• One of a group standing in an alley
• Rear target in bowling
• Highest-numbered bowling target
• It’s right down one’s alley
• One of a bowler's targets
• Second-shot target, often
• Spare part, perhaps