What is the meaning of complaint?

noun

• An often persistent bodily disorder or disease; a cause for complaining.
  • synonyms: ailment, ill
• Formerly) a loud cry (or repeated cries) of pain or rage or sorrow. (
• An expression of grievance or resentment.
• Civil law. ( the first pleading of the plaintiff setting out the facts on which the claim for relief is based)
• Criminal law. ( a pleading describing some wrong or offense)
  • usage: "he was arrested on a charge of larceny"
  • synonyms: charge