What is the meaning of blemish?

noun

• A mark or flaw that spoils the appearance of something (especially on a person's body. )
  • usage: "a facial blemish"
  • synonyms: defect, mar

verb

• Mar or spoil the appearance of.
  • usage: "scars defaced her cheeks"; "The vandals disfigured the statue"
  • synonyms: deface, disfigure
• Mar or impair with a flaw.
  • usage: "her face was blemished"
  • synonyms: spot
• Add a flaw or blemish to; make imperfect or defective.
  • synonyms: flaw