What is the meaning of nothing?

noun

• A quantity of no importance.
  • usage: "it looked like nothing I had ever seen before"; "reduced to nil all the work we had done"; "we racked up a pathetic goose egg"; "it was all for naught"; "I didn't hear zilch about it"
  • synonyms: nil, nix, nada, null, aught, cipher, cypher, goose egg, naught, zero, zilch, zip, zippo

adverb

• In no respect; to no degree.
  • usage: "he looks nothing like his father"