1 Meaning, Definition & Usage

  1. noun the smallest whole number or a numeral representing this number
    ace; I; unity; one; single.
    • he has the one but will need a two and three to go with it
    • they had lunch at one
  2. adjective satellite used of a single unit or thing; not two or more
    i; ane; one.
    • `ane' is Scottish

WordNet