What is the meaning of threefold?

adjective

• Three times as great or many.
  • usage: "a claim for treble (or triple) damages"; "a threefold increase"
  • synonyms: treble, three-fold, triple
• Having more than one decidedly dissimilar aspects or qualities."a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence- R. W. Emerson; "every episode has its double and treble meaning-Frederick Harrison
  • synonyms: double, dual, twofold, two-fold, treble, three-fold

adverb

• By a factor of three.
  • usage: "our rent increased threefold in the past five years"
  • synonyms: three times