Possible Clues:

• Pounds a bit short, saving one in case for a significant event
• Rite of passage
• Roadside distance marker
• By the way they may be made to smile with Wolfe
• One comes back, just in case one measures away
• Turning point
• Wayside indicator fixed for fear one will go past the road?
• Important stage (reached)
• Landmark
• Event worth celebrating