What is the meaning of cuss?

noun

• A persistently annoying person.
  • synonyms: pest, blighter, pesterer, gadfly
• A boy or man.
  • usage: "that chap is your host"; "there's a fellow at the door"; "he's a likable cuss"; "he's a good bloke"
  • synonyms: chap, fellow, feller, fella, lad, gent, blighter, bloke
• Profane or obscene expression usually of surprise or anger.
  • usage: "expletives were deleted"
  • synonyms: curse, curse word, expletive, oath, swearing, swearword

verb

• Utter obscenities or profanities.
  • usage: "The drunken men were cursing loudly in the street"
  • synonyms: curse, blaspheme, swear, imprecate