Final answer:
Docking a tart shell refers to creating small holes in the pastry dough before baking to prevent it from puffing up too much.
Step-by-step explanation:
Docking a tart shell refers to the process of using a fork or a knife to create small holes or cuts in the pastry dough before baking it. This helps prevent the dough from puffing up too much during baking and ensures even cooking. By creating these small holes, steam can escape from the pastry, preventing it from becoming too flaky or undercooked.