Definition of "one-two-three" []

• Quickly. (adverb)

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• "Why, when she played her one-two-three, tum-tum-tum, I was in the seventh heaven of bliss."
• "Many thought that really, it was more a one-two-three."
• "The doctors rushed Peter, Ben, or Judas to the table, where they strapped wires to his tiny chest and shouted one-two-three come on."