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English definition of “one”

one

pronoun, adjective [not gradable] (PARTICULAR THING/PERSON)   /wʌn/
used to refer to a particular thing or person within a group or range of things or people : There are lots of flavors – which one would you like? He advised workers around him, especially the younger ones , to be patient . Kayla is the one with dark brown hair . Make sure the ones that we've got there do what you want them to do. She is one beautiful woman (= she is very beautiful ). Why don’t we meet for lunch one day next week ? one of To be one of a group of people or things is to be a member of that group : It’s one of the most popular songs .
(Definition of one pronoun, adjective (PARTICULAR THING/PERSON) from the Cambridge Academic Content Dictionary © Cambridge University Press)
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