What does the word concussion mean?

Usage examples for concussion

  1. He felt exactly as if he had been given another concussion, absolutely free and without any obligations. – The Impossibles by Gordon Randall Garrett Laurence Mark Janifer
  2. It is the shock of the concussion which has brought him down. – The Prussian Terror by Alexandre Dumas
  3. It does not take such a man as the factor long to recover from a moral concussion. – Baree, Son of Kazan by James Oliver Curwood