What does the word indentation mean?

Usage examples for indentation

  1. All degrees of severity are met with, from a simple, localised indentation of the bone, to complete smashing of the skull into fragments. – Manual of Surgery Volume Second: Extremities--Head--Neck. Sixth Edition. by Alexander Miles Alexis Thomson
  2. French and English lines were printed in parallel columns; they are shown here in pairs, with different indentation. – Dialogues in French and English by William Caxton
  3. It was in the eyes and it was in the mouth, it was in every line of the face and every fact of the attitude, in the indentation of the chin, in the way the hair was planted, the moustache was twisted, the smile came and went, the breath rose and fell. – A London Life; The Patagonia; The Liar; Mrs. Temperly by Henry James