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one [ˈwʌn]

1 one noun
  • the number 1
  • a one-dollar bill
  • one o'clock

2 one pronoun
  • that person or thing
  • someone or something that is a part of a particular group—+ of
  • people in general : any person

3 one adjective
  • having the value of 1
  • —used to refer to a single person or thing
  • —used before a noun to indicate that someone or something is part of a group of similar people or things