the pastry container that covers the bottom and sometimes the top of a pie

You can use a store-bought or homemade pie crust for this blueberry tart.

used to refer to a type of high collar that has an edge that is not straight but that curves in and out, or to a piece of clothing that has this type of collar

She was wearing a long-sleeved blouse with a pie-crust collar. 她穿着一件有波浪边高领的长袖衬衫。

She cited Margaret Thatcher as an inspiration, which would explain the pie-crust blouses, woolly cardies and A-line skirts. 她说玛格丽特•撒切尔是她的灵感来源，这样就能明白为什么会有波浪边衬衫、羊毛开衫和A字裙。