A " heel" (heel) is a back part of a shoe.

“鞋跟”（heel）是鞋子的后跟部分。

The " heel" is the bottom back part of a shoe, and " to dig" means to create a little hole in the ground.

“鞋跟” 是鞋子的后底部分，“挖” 是指在地上挖一个小洞。