1. The smallest whole number or a numeral representing this number
   "he has the one but will need a two and three to go with it"; "they had lunch at one";
   - 1, I, unity
    
2. A single person or thing
   "he is the best one"; "this is the one I ordered"

1. Used of a single unit or thing; not two or more
   "There is only one correct answer"; "I need just one more minute"; "She is the one person I can trust";
   - 1, i, ane [UK, dialect]
    
2. Having the indivisible character of a unit
   "spoke with one voice";
   - unitary
    
3. Being a single entity made by combining separate components
   "three chemicals combining into one solution"
    
4. Of the same kind or quality
   "two animals of one species"
    
5. Indefinite in time or position
   "he will come one day"; "one place or another"
    
6. Eminent beyond or above comparison
   "she's one girl in a million"; "the one and only Muhammad Ali";
   - matchless, nonpareil, one and only, peerless, unmatched, unmatchable, unrivaled [US], unrivalled [Brit, Cdn]
    
7. [informal] Very; used informally as an intensifier
   "that is one fine dog";
   - right [informal]

1. A person in general
   "Can one swim there?"
    
2. A specified thing
   "The one on top is the newest model"

Sounds like: oiler, r, o

Derived forms: ones

See also: cardinal, combined, extraordinary, incomparable, indefinite, same, uncomparable, united

Type of: digit, figure, unit

Encyclopedia: One, Two, Three, Go!