What is the meaning of orderly?

noun

• A soldier who serves as an attendant to a superior officer.
  • usage: "the orderly laid out the general's uniform"
• A male hospital attendant who has general duties that do not involve the medical treatment of patients.
  • synonyms: hospital attendant

adjective

• Devoid of violence or disruption.
  • usage: "an orderly crowd confronted the president"
• Clean or organized.
  • usage: "her neat dress"; "a neat room"
  • synonyms: neat