"Etched lines" refers to fine grooves or marks that are carved or cut into a surface, typically using acid or a sharp tool. The phrase implies creating precise and permanent lines that are visible on the material. Full definition
In the deeply etched lines on the cheeks of the older woman tears began to run.» (firstthings.com)
The range and richness of etched lines and traditional aquatint is here achieved using magnesium plates, cut up and pieced back together, combining areas of lace - like delicacy and passionate deep troughs. (studiointernational.com)
Roberts gave her little red dress a cool - girl twist with a sheer black Wolford pair (with etched lines at the ankle, no less) and fierce Coach leopard - print booties. (instyle.com)