indentation

1. N-COUNT An indentation is the space at the beginning of a line of writing when it starts further away from the edge of the paper than all the other lines. 行首空格

2. N-COUNT An indentation is a shallow hole or cut in the surface or edge of something. 缺口

Using a knife, make slight indentations around the edges of the pastry. 用刀繞餡餅邊沿刻出小缺口。