What is the meaning of incident?

noun

• A single distinct event.
• A public disturbance.
  • usage: "the police investigated an incident at the bus station"

adjective

• Falling or striking of light rays on something.
  • usage: "incident light"
• Sometimes followed by `to'. ( minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence)
  • usage: "incidental expenses"; "the road will bring other incidental advantages"; "extra duties incidental to the job"; "labor problems incidental to a rapid expansion"; "confusion incidental to a quick change"
  • synonyms: incidental