What does the word disorder mean?

Usage examples for disorder

  1. Rona's eyes were red and swollen with crying, and her hair hung in wild disorder. – For the Sake of the School by Angela Brazil
  2. Everything seemed strangely quiet, except that men were running back down the street in disorder. – The Coast of Adventure by Harold Bindloss
  3. He is feverish, or possibly subject to fits- to choriasis or who knows what disorder of the nervous system. – Old Calabria by Norman Douglas