(Sarah of the Clue Crew delivers the clue from the Boudin Bakery in San Francisco, California) It once meant a notch used to record a tally in a game.  That meaning is still used for the cuts that will make your sourdough bake and look better
I used the tiny lever 
of my knowledge of the city to induce-I still won't say ...... (For me, the sticks and 
rings game on the carousel looks more like a symbolic pageant.