indentation
noun /ˌɪndenˈteɪʃn/
  /ˌɪndenˈteɪʃn/
- [countable] a cut, gap or mark in the edge or surface of something
- The horse's hooves left deep indentations in the mud.
 - These indentations are common on the Pacific coast.
 
 - (also indent)[countable] a space left at the beginning of a line of print or writing
 - [uncountable] the action of indenting something or the process of being indented