indentation

noun

1. 1.The act of indenting or state of being indented.
2. 2.A notch or recess, in the margin or border of anything
3. 3.A recess or sharp depression in any surface.
4. 4.The act of beginning a line or series of lines at a little distance within the flush line of the column or page, as in the common way of beginning the first line of a paragraph.
5. 5.A measure of the distance from the flush line