in·den·ta·tion /ˌɪndenˈteɪʃən/ (also indent) noun [countableC] 1. TCNWRITEa space at the beginning of a line of writing 〔书写时的〕行首空格
2 CUTa cut into the surface or edge of something 凹口,凹陷,缺口 Make an indentation in the center of each cookie. 在每块甜饼干的中间挖一个缺口。